InvalidOperationException in command SolutionUpdateLatest

[PhilJollans]

I have received this report by Email on 13-October-2020

System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
   at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
   at System.Collections.Generic.Dictionary`2.ValueCollection.Enumerator.MoveNext()
   at Ankh.Scc.OpenDocumentTracker.GetParentDocument(SccDocumentData document)
   at Ankh.Scc.OpenDocumentTracker.SccDocumentLock.Reload(IEnumerable`1 paths)
   at Ankh.Scc.OpenDocumentTracker.SccDocumentLock.ReloadModified()
   at Ankh.Scc.OpenDocumentTracker.SccDocumentLock.ReloadModifiedDisposer.Dispose()
   at Ankh.Commands.SolutionUpdateCommand.OnExecute(CommandEventArgs e)
   at Ankh.Commands.CommandMapItem.OnExecute(CommandEventArgs e)
   at Ankh.Commands.CommandMapper.Execute(AnkhCommand command, CommandEventArgs e)

svn-version=1.12.0
os-version=10.0.19041.0
ankh-version=1.0.0.12
sharpsvn-version=1.12.0.1
command=SolutionUpdateLatest
vs-version=16.0.30501.64

[PhilJollans]

This might be similar to issue #15. Both have the class Ankh.Scc.OpenDocumentTracker in the stack trace, although not the same function.