AL error AL0999: Internal error: System.AggregateException: Object reference not set to an instance of an object.

Please include the following with each issue:

1. Describe the bug When compiling the base app via the base app contribution program (https://github.com/microsoft/BusinessCentralApps) the latest prerelease version of the AL returns internal error.

Error happens in 16.0.1523709, when downgraded to one of the previous prerelease v27 AL (16.0.1384372) it works.

2. To Reproduce Clone the base app repo, switch to the latest prerelease and compile the app.

3. Expected behavior No error

4. Actual behavior

Microsoft (R) AL Compiler version 16.0.23.16427
Copyright (C) Microsoft Corporation. All rights reserved

Compilation started for project 'Base Application' containing '7812' files at '15:46:55.824'.

error AL0999: Internal error: System.AggregateException: One or more errors occurred. (Object reference not set to an instance of an object.) (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.))) (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.)))) (One or more errors occurred. (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.))) (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.))) (One or more errors occurred. (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.)))) (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.))))
 ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.IsTypeForwardingCircular(String baseTypeName, String searchedAssembly) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 185
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.LoadForwardedTypeFromAssembly(AssemblyDefinition assembly, String fullTypeName) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 148
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass17_0.<LoadTypeFromAssembly>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 105
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass16_0.<LoadType>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 88
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ReferenceDotNetTypeDeclarationSymbol.GetDotNetTypeSymbolLazy(DotNetTypeDeclarationDefinition typeDefinition) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Reference\ReferenceDotNetTypeDeclarationSymbol.cs:line 65
   at System.Lazy`1.PublicationOnlyViaFactory(LazyHelper initializer)
   at System.Lazy`1.CreateValue()
   at Microsoft.Dynamics.Nav.CodeAnalysis.ReferenceManager.ResolveDotNetObjectSymbolsByName(ModuleSymbol referencingModule, String name) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\SymbolReference\ReferenceManager.cs:line 446
   at Microsoft.Dynamics.Nav.CodeAnalysis.ReferenceManager.GetObjectSymbolsByNameAcrossModules(ModuleSymbol referencingModule, SymbolKind kind, String name) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\SymbolReference\ReferenceManager.cs:line 371
   at Microsoft.Dynamics.Nav.CodeAnalysis.LegacyInContainerBinder.LookupSymbolsInSingleBinder(LookupResult result, String name, LookupOptions options, SymbolKind symbolKind, Binder originalBinder, Boolean diagnose, HashSet`1& useSiteDiagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\LegacyInContainerBinder.cs:line 78
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupSymbolsWithFallback(LookupResult result, String name, HashSet`1& useSiteDiagnostics, LookupOptions options, SymbolKind symbolKind) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder.cs:line 832
   at Microsoft.Dynamics.Nav.CodeAnalysis.BinderExtensions.LookupTypeSymbol(Binder binder, SymbolKind symbolKind, String name, SyntaxNode typeSyntax, DiagnosticBag diagnostics, ErrorCode notFoundErrorCode, LookupDiagnosticOptions diagnosticOptions) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\BinderExtensions.cs:line 79
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindSubTypedDataType(Symbol ownerSymbol, SubtypedDataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 412
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindType(Symbol ownerSymbol, DataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 227
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableOrParameterType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 812
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 731
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceVariableSymbol.LazyGetType() in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceVariableSymbol.cs:line 96
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceVariableSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceVariableSymbol.cs:line 126
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceMethodOrTriggerSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceMethodOrTriggerSymbol.cs:line 386
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceMembersCompleteAndCheckUniqueness(SourceLocation locationOpt, DiagnosticBag diagnostics, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 186
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceCompleteMembers(SourceLocation locationOpt, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 1301
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceTableTypeSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceTableTypeSymbol.cs:line 50
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceNamespaceSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceNamespaceSymbol.cs:line 806
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceModuleSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceModuleSymbol.cs:line 108
   at Microsoft.Dynamics.Nav.CodeAnalysis.Compilation.GetSourceDeclarationDiagnostics(SyntaxTree syntaxTree, Nullable`1 filterSpanWithinTree, Func`4 locationFilterOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compilation\Compilation.cs:line 1277
   at Microsoft.Dynamics.Nav.CodeAnalysis.Compilation.GetDiagnostics(CompilationStage stage, Boolean includeEarlierStages, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Compilation\Compilation.cs:line 787
 ---> (Inner Exception #1) System.AggregateException: One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.))) (One or more errors occurred. (Object reference not set to an instance of an object.)) (One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.)))
 ---> System.AggregateException: One or more errors occurred. (Object reference not set to an instance of an object.)
 ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.IsTypeForwardingCircular(String baseTypeName, String searchedAssembly) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 185
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.LoadForwardedTypeFromAssembly(AssemblyDefinition assembly, String fullTypeName) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 148
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass17_0.<LoadTypeFromAssembly>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 105
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass16_0.<LoadType>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 88
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ReferenceDotNetTypeDeclarationSymbol.GetDotNetTypeSymbolLazy(DotNetTypeDeclarationDefinition typeDefinition) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Reference\ReferenceDotNetTypeDeclarationSymbol.cs:line 65
   at System.Lazy`1.PublicationOnlyViaFactory(LazyHelper initializer)
   at System.Lazy`1.CreateValue()
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SymbolMap`1.GetSymbolsByName[RS](SymbolKind symbolKind, String name) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\SymbolMap.cs:line 158
   at Microsoft.Dynamics.Nav.CodeAnalysis.WithUsingNamespacesBinder.LookupSymbolsInSingleBinder(LookupResult result, String name, LookupOptions options, SymbolKind symbolKind, Binder originalBinder, Boolean diagnose, HashSet`1& useSiteDiagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\WithUsingNamespacesBinder.cs:line 67
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupSymbolsWithFallback(LookupResult result, String name, HashSet`1& useSiteDiagnostics, LookupOptions options, SymbolKind symbolKind) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder.cs:line 832
   at Microsoft.Dynamics.Nav.CodeAnalysis.BinderExtensions.LookupTypeSymbol(Binder binder, SymbolKind symbolKind, String name, SyntaxNode typeSyntax, DiagnosticBag diagnostics, ErrorCode notFoundErrorCode, LookupDiagnosticOptions diagnosticOptions) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\BinderExtensions.cs:line 79
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindSubTypedDataType(Symbol ownerSymbol, SubtypedDataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 412
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindType(Symbol ownerSymbol, DataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 227
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableOrParameterType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 812
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 731
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceVariableSymbol.LazyGetType() in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceVariableSymbol.cs:line 96
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceVariableSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceVariableSymbol.cs:line 126
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceMembersCompleteAndCheckUniqueness(SourceLocation locationOpt, DiagnosticBag diagnostics, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 186
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceCompleteMembers(SourceLocation locationOpt, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 1301
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 1240
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceNamespaceSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceNamespaceSymbol.cs:line 806
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceNamespaceSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceNamespaceSymbol.cs:line 806
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
 ---> (Inner Exception #1) System.AggregateException: One or more errors occurred. (Object reference not set to an instance of an object.)
 ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.IsTypeForwardingCircular(String baseTypeName, String searchedAssembly) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 185
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.LoadForwardedTypeFromAssembly(AssemblyDefinition assembly, String fullTypeName) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 148
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass17_0.<LoadTypeFromAssembly>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 105
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass16_0.<LoadType>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 88
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ReferenceDotNetTypeDeclarationSymbol.GetDotNetTypeSymbolLazy(DotNetTypeDeclarationDefinition typeDefinition) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Reference\ReferenceDotNetTypeDeclarationSymbol.cs:line 65
   at System.Lazy`1.PublicationOnlyViaFactory(LazyHelper initializer)
   at System.Lazy`1.CreateValue()
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SymbolMap`1.GetSymbolsByName[RS](SymbolKind symbolKind, String name) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\SymbolMap.cs:line 158
   at Microsoft.Dynamics.Nav.CodeAnalysis.WithUsingNamespacesBinder.LookupSymbolsInSingleBinder(LookupResult result, String name, LookupOptions options, SymbolKind symbolKind, Binder originalBinder, Boolean diagnose, HashSet`1& useSiteDiagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\WithUsingNamespacesBinder.cs:line 67
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupSymbolsWithFallback(LookupResult result, String name, HashSet`1& useSiteDiagnostics, LookupOptions options, SymbolKind symbolKind) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder.cs:line 832
   at Microsoft.Dynamics.Nav.CodeAnalysis.BinderExtensions.LookupTypeSymbol(Binder binder, SymbolKind symbolKind, String name, SyntaxNode typeSyntax, DiagnosticBag diagnostics, ErrorCode notFoundErrorCode, LookupDiagnosticOptions diagnosticOptions) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\BinderExtensions.cs:line 79
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindSubTypedDataType(Symbol ownerSymbol, SubtypedDataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 412
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindType(Symbol ownerSymbol, DataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 227
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableOrParameterType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 812
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ParameterHelpers.MakeParameters(Binder binder, Symbol owner, SeparatedSyntaxList`1 syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\ParameterHelpers.cs:line 30
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceMethodOrTriggerSymbol.ParametersChecks(DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceMethodOrTriggerSymbol.cs:line 505
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceMethodOrTriggerSymbol.LazyMethodChecks() in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceMethodOrTriggerSymbol.cs:line 320
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceMethodOrTriggerSymbol.get_Parameters() in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceMethodOrTriggerSymbol.cs:line 469
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceMethodOrTriggerSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceMethodOrTriggerSymbol.cs:line 401
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceMembersCompleteAndCheckUniqueness(SourceLocation locationOpt, DiagnosticBag diagnostics, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 186
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceCompleteMembers(SourceLocation locationOpt, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 1301
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 1240
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceNamespaceSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceNamespaceSymbol.cs:line 806
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()<---

 ---> (Inner Exception #2) System.AggregateException: One or more errors occurred. (Object reference not set to an instance of an object.)
 ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.IsTypeForwardingCircular(String baseTypeName, String searchedAssembly) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 185
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.LoadForwardedTypeFromAssembly(AssemblyDefinition assembly, String fullTypeName) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 148
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass17_0.<LoadTypeFromAssembly>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 105
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass16_0.<LoadType>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 88
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ReferenceDotNetTypeDeclarationSymbol.GetDotNetTypeSymbolLazy(DotNetTypeDeclarationDefinition typeDefinition) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Reference\ReferenceDotNetTypeDeclarationSymbol.cs:line 65
   at System.Lazy`1.PublicationOnlyViaFactory(LazyHelper initializer)
   at System.Lazy`1.CreateValue()
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SymbolMap`1.GetSymbolsByName[RS](SymbolKind symbolKind, String name) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\SymbolMap.cs:line 158
   at Microsoft.Dynamics.Nav.CodeAnalysis.WithUsingNamespacesBinder.LookupSymbolsInSingleBinder(LookupResult result, String name, LookupOptions options, SymbolKind symbolKind, Binder originalBinder, Boolean diagnose, HashSet`1& useSiteDiagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\WithUsingNamespacesBinder.cs:line 67
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupSymbolsWithFallback(LookupResult result, String name, HashSet`1& useSiteDiagnostics, LookupOptions options, SymbolKind symbolKind) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder.cs:line 832
   at Microsoft.Dynamics.Nav.CodeAnalysis.BinderExtensions.LookupTypeSymbol(Binder binder, SymbolKind symbolKind, String name, SyntaxNode typeSyntax, DiagnosticBag diagnostics, ErrorCode notFoundErrorCode, LookupDiagnosticOptions diagnosticOptions) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\BinderExtensions.cs:line 79
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindSubTypedDataType(Symbol ownerSymbol, SubtypedDataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 412
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindType(Symbol ownerSymbol, DataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 227
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableOrParameterType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 812
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 731
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceVariableSymbol.LazyGetType() in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceVariableSymbol.cs:line 96
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceVariableSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceVariableSymbol.cs:line 126
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceMethodOrTriggerSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceMethodOrTriggerSymbol.cs:line 386
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceMembersCompleteAndCheckUniqueness(SourceLocation locationOpt, DiagnosticBag diagnostics, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 186
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceCompleteMembers(SourceLocation locationOpt, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 1301
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 1240
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
...
...
...
...
...
...
...
...
...
TRUNCATED, too long for GitHub
...
...
...
...
...
...
...
...
...
...
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceNamespaceSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceNamespaceSymbol.cs:line 806
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceNamespaceSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceNamespaceSymbol.cs:line 806
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()<---

 ---> (Inner Exception #3) System.AggregateException: One or more errors occurred. (One or more errors occurred. (Object reference not set to an instance of an object.))
 ---> System.AggregateException: One or more errors occurred. (Object reference not set to an instance of an object.)
 ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.IsTypeForwardingCircular(String baseTypeName, String searchedAssembly) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 185
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.LoadForwardedTypeFromAssembly(AssemblyDefinition assembly, String fullTypeName) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 148
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass17_0.<LoadTypeFromAssembly>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 105
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Dynamics.Nav.CodeAnalysis.DotNet.Cecil.CecilDotNetTypeLoader.<>c__DisplayClass16_0.<LoadType>b__0(String _) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\DotNet\Cecil\CecilDotNetTypeLoader.cs:line 88
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ReferenceDotNetTypeDeclarationSymbol.GetDotNetTypeSymbolLazy(DotNetTypeDeclarationDefinition typeDefinition) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Reference\ReferenceDotNetTypeDeclarationSymbol.cs:line 65
   at System.Lazy`1.PublicationOnlyViaFactory(LazyHelper initializer)
   at System.Lazy`1.CreateValue()
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SymbolMap`1.GetSymbolsByName[RS](SymbolKind symbolKind, String name) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\SymbolMap.cs:line 158
   at Microsoft.Dynamics.Nav.CodeAnalysis.WithUsingNamespacesBinder.LookupSymbolsInSingleBinder(LookupResult result, String name, LookupOptions options, SymbolKind symbolKind, Binder originalBinder, Boolean diagnose, HashSet`1& useSiteDiagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\WithUsingNamespacesBinder.cs:line 67
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.LookupSymbolsWithFallback(LookupResult result, String name, HashSet`1& useSiteDiagnostics, LookupOptions options, SymbolKind symbolKind) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder.cs:line 832
   at Microsoft.Dynamics.Nav.CodeAnalysis.BinderExtensions.LookupTypeSymbol(Binder binder, SymbolKind symbolKind, String name, SyntaxNode typeSyntax, DiagnosticBag diagnostics, ErrorCode notFoundErrorCode, LookupDiagnosticOptions diagnosticOptions) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\BinderExtensions.cs:line 79
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindSubTypedDataType(Symbol ownerSymbol, SubtypedDataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 412
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindType(Symbol ownerSymbol, DataTypeSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 227
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableOrParameterType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 812
   at Microsoft.Dynamics.Nav.CodeAnalysis.Binder.BindVariableType(Symbol ownerSymbol, TypeReferenceBaseSyntax syntax, DiagnosticBag diagnostics) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Binder\Binder_Symbols.cs:line 731
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceVariableSymbol.LazyGetType() in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceVariableSymbol.cs:line 96
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceVariableSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceVariableSymbol.cs:line 126
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceMethodOrTriggerSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceMethodOrTriggerSymbol.cs:line 386
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceFieldSymbol.ForceCompleteTriggers(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceFieldSymbol.cs:line 199
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceFieldSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceFieldSymbol.cs:line 143
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceMembersCompleteAndCheckUniqueness(SourceLocation locationOpt, DiagnosticBag diagnostics, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 186
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.ObjectMembers`1.ForceCompleteMembers(SourceLocation locationOpt, CancellationToken cancellationToken, Predicate`1 excludeFromNameUniqueness) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Members\ObjectMembers.cs:line 1301
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceTableTypeSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceTableTypeSymbol.cs:line 50
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceNamespaceSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceNamespaceSymbol.cs:line 806
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction`1 action, ParallelOptions options, Boolean stopOnFirstFailure)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
   at System.Threading.Tasks.Parallel.ForWorker[TLocal,TInt](TInt fromInclusive, TInt toExclusive, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Func`4 bodyWithLocal, Func`1 localInit, Action`1 localFinally)
   at Microsoft.Dynamics.Nav.CodeAnalysis.Symbols.SourceNamespaceSymbol.ForceComplete(SourceLocation locationOpt, CancellationToken cancellationToken) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Symbols\Source\SourceNamespaceSymbol.cs:line 806
   at Microsoft.Dynamics.Nav.CodeAnalysis.Utilities.UICultureUtilities.<>c__DisplayClass6_0`1.<WithCurrentUICulture>b__0(T param) in X:\Prod\Microsoft.Dynamics.Nav.CodeAnalysis\Utilities\UICultureUtilities.cs:line 178
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__DisplayClass19_0`2.<ForWorker>b__1(RangeWorker& currentWorker, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion)
   at System.Threading.Tasks.TaskReplicator.Replica.Execute()<---
<---


Compilation ended at '15:47:04.664'.

Error: The package could not be created.

Settings.json

{
    "al.enableCodeAnalysis": false,
    "al.enableCodeActions": false,
    "al.assemblyProbingPaths": [
        "C:/Program Files/dotnet/shared",
        "C:/ProgramData/BcContainerHelper/Extensions/bcserver/.netPackages",
        "C:/Windows/Microsoft.NET/Framework64/v4.0.30319",
        "C:/bcartifacts.cache/sandbox/27.0.36203.0",
        "C:/WINDOWS/assembly"
      ]
}

5. Versions:

AL Language: 16.0.1523709
Visual Studio Code: 1.102.0
Business Central: v27 (base app contribution program)

Internal work item: AB#592553

Jul 12 '25 05:07 TKapitan

Can you do a binary search (removing some and trying to load the project) on the paths to see which path(s) in the assemblies is causing this? It might be a combination of the assemblies in your paths

Jul 20 '25 18:07 BazookaMusic

Can you do a binary search (removing some and trying to load the project) on the paths to see which path(s) in the assemblies is causing this? It might be a combination of the assemblies in your paths

The problem seems to be with 'C:\Program Files\dotnet\shared'; I tried to dig deeper but seems any of the folders is causing the problem.

Aug 18 '25 15:08 TKapitan

For me its ./.netpackages/shared/Microsoft.NETCore.App/8.0.15/8.0.15/ which leads to this error. Microsoft.AspNetCore.App seems to be loading fine

Sep 03 '25 10:09 StefanMaron

We are running into the same issue with the recent update of AL Language to 16.2. Did any of you guys were able to find the issue or a potential fix?

Oct 02 '25 06:10 Martijndo

For me, the issue was caused by the latest update of the AL Language extension. Uninstalling it and installing a specific version from the last two months resolved the problem.

Oct 02 '25 09:10 cosminah

Thanks for you help Cosmina, Locally you can switch back to the old version of the compiler. I already advised this to our developers. But BCContainerhelper automatically pulls the AL compiler version from the container. It looks like those are updated to the new version 16.0.1523709 already.

Oct 02 '25 10:10 Martijndo

We have the same issue on our onprem extensions.

Oct 02 '25 18:10 MarvinPowell

@BazookaMusic Can you look into this problem for us? We switched back to the old version 15.2 but we would like to keep up to date in the future.

Oct 06 '25 09:10 Martijndo

Any Workaround for bccontainerhelper? One of our projects build is failing due to this

Oct 06 '25 10:10 marknitek

Update VSCode settings to C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15
This works for both ltsc2019 or ltsc2022 based Business Central 27 Images.

For lower BC versions, you can investigate in the Docker Container which versions of .Net Core are installed and change the setting.

$dockerSession = New-PSSession -ContainerId xxx -RunAsAdministrator

Invoke-Command -Session $dockerSession -ScriptBlock {
    $path = "C:\Program Files\dotnet\shared\Microsoft.NETCore.App"
    Get-ChildItem -Path $path -Force
}

Dec 08 '25 21:12 bennyvanlyssebettens