Error loading MultiSelect lists

[ryanmaclean365]

I'm getting an error with the plugin when trying to configure and use multiselect lists:

Error below:

Error: An error occurred in the AdvancedMultiSelect.Plugins.ItemSet.GetItemSet plug-in. Exception: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state. Details: 
Message: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.
Trace: 
Server stack trace: 
   at System.ServiceModel.Channels.CommunicationObject.ThrowIfDisposedOrImmutable()
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at System.ServiceModel.ICommunicationObject.Open()
   at Microsoft.Crm.Sandbox.SandboxClientBase`1.Open()
   at Microsoft.Crm.Sandbox.SandboxClientBase`1.get_Proxy()
   at Microsoft.Crm.Sandbox.SandboxCallbackService.ProcessException(Exception e, SandboxSdkClient client)
   at Microsoft.Crm.Sandbox.SandboxOrganizationService.Execute(String operation, Byte[] serializedRequest)
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [1]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Microsoft.Crm.Sandbox.ISandboxOrganizationService.Execute(String operation, Byte[] serializedRequest)
   at Microsoft.Crm.Sandbox.SandboxOrganizationServiceWrapper.ExecuteInternal(OrganizationRequest request)
   at Microsoft.Xrm.Sdk.Client.OrganizationServiceContext.Execute(OrganizationRequest request)
   at Microsoft.Xrm.Sdk.Linq.QueryProvider.RetrieveEntityCollection(OrganizationRequest request, NavigationSource source)
   at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute(QueryExpression qe, Boolean throwIfSequenceIsEmpty, Boolean throwIfSequenceNotSingle, Projection projection, NavigationSource source, List`1 linkLookups, String& pagingCookie, Boolean& moreRecords)
   at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute[TElement](QueryExpression qe, Boolean throwIfSequenceIsEmpty, Boolean throwIfSequenceNotSingle, Projection projection, NavigationSource source, List`1 linkLookups)
   at Microsoft.Xrm.Sdk.Linq.QueryProvider.Execute[TElement](Expression expression)
   at Microsoft.Xrm.Sdk.Linq.QueryProvider.System.Linq.IQueryProvider.Execute[TResult](Expression expression)
   at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source)
   at AdvancedMultiSelect.Logic.ItemSet.ItemSetBuilder.InitItemSetConfig()
   at AdvancedMultiSelect.Plugins.ItemSet.GetItemSet.ProcessGetItemSet(PluginContext pluginContext)
   at AdvancedMultiSelect.PluginBase`1.Execute(IServiceProvider serviceProvider)