=====================
08/12/2015 18:46:04
Recoverable
System.AggregateException: One or more errors occurred. ---> Microsoft.Assumes+InternalErrorException: An internal error occurred. Please contact Microsoft Product Support Services.
   at Microsoft.Assumes.Fail(String message, Boolean showAssert)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectDirectoryTreeProvider.<ProcessFileEventsAddFileAsync>d__63.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectDirectoryTreeProvider.<ProcessFileEventsAsync>d__62.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeProviderBase.<>c__DisplayClass94_0.<<Initialize>b__1>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeProviderBase.<>c__DisplayClass101_0.<<SubmitTreeUpdateAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectDirectoryTreeProvider.<>c__DisplayClass60_0.<<ResetFileEventsQueueProcessor>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.VisualStudio.ProjectSystem.Utilities.CommonProjectSystemTools.Rethrow(Exception ex)
   at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.<SubmitErrorReport>b__0()
   at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.<Guard>b__0()
   at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 )
   --- End of inner exception stack trace ---
---> (Inner Exception #0) Microsoft.Assumes+InternalErrorException: An internal error occurred. Please contact Microsoft Product Support Services.
   at Microsoft.Assumes.Fail(String message, Boolean showAssert)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectDirectoryTreeProvider.<ProcessFileEventsAddFileAsync>d__63.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectDirectoryTreeProvider.<ProcessFileEventsAsync>d__62.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeProviderBase.<>c__DisplayClass94_0.<<Initialize>b__1>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeProviderBase.<>c__DisplayClass101_0.<<SubmitTreeUpdateAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectDirectoryTreeProvider.<>c__DisplayClass60_0.<<ResetFileEventsQueueProcessor>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.VisualStudio.ProjectSystem.Utilities.CommonProjectSystemTools.Rethrow(Exception ex)
   at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.<SubmitErrorReport>b__0()
   at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.<Guard>b__0()
   at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 )<---

===================
10/12/2015 16:53:47
Recoverable
System.AggregateException: One or more errors occurred. ---> Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeCorruptionException: Failed to update the project tree. ---> System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
   at Microsoft.VisualStudio.ProjectSystem.Designers.UnattachedProjectTreeNode.Find(IntPtr nodeId)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectTree.Find(IntPtr nodeId)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.RemoveAnyConflictingSiblingPriorToRename[T](T intendedRenameNode, String newCaption, IProjectTree& conflictingNode)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.RenameFileItems(IProjectTree tree, IImmutableDictionary`2 changeMap, IProjectChangeDescription change, IImmutableDictionary`2 projectData, ConfiguredProjectExports configuredProjectExports)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.OnProjectSubscriptionChanged(IProjectTreeSnapshot treeSnapshot, ConfiguredProjectExports configuredProjectExports, IProjectVersionedValue`1 update, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.OnProjectSubscriptionChanged(IProjectTreeSnapshot treeSnapshot, ConfiguredProjectExports configuredProjectExports, IProjectVersionedValue`1 update, CancellationToken cancellationToken)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.<>c__DisplayClass172_0.<ProjectSubscriptionService_ChangedAsync>b__0(IProjectVersionedValue`1 treeSnapshot, ConfiguredProjectExports configuredProjectExports, CancellationToken ct)
   at Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeProviderBase.<>c__DisplayClass94_0.<<Initialize>b__1>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeProviderBase.<>c__DisplayClass101_0.<<SubmitTreeUpdateAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.VisualStudio.ProjectSystem.Utilities.CommonProjectSystemTools.Rethrow(Exception ex)
   at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.<SubmitErrorReport>b__0()
   at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.<Guard>b__0()
   at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 )
   --- End of inner exception stack trace ---
---> (Inner Exception #0) Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeCorruptionException: Failed to update the project tree. ---> System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
   at Microsoft.VisualStudio.ProjectSystem.Designers.UnattachedProjectTreeNode.Find(IntPtr nodeId)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectTree.Find(IntPtr nodeId)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.RemoveAnyConflictingSiblingPriorToRename[T](T intendedRenameNode, String newCaption, IProjectTree& conflictingNode)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.RenameFileItems(IProjectTree tree, IImmutableDictionary`2 changeMap, IProjectChangeDescription change, IImmutableDictionary`2 projectData, ConfiguredProjectExports configuredProjectExports)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.OnProjectSubscriptionChanged(IProjectTreeSnapshot treeSnapshot, ConfiguredProjectExports configuredProjectExports, IProjectVersionedValue`1 update, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.OnProjectSubscriptionChanged(IProjectTreeSnapshot treeSnapshot, ConfiguredProjectExports configuredProjectExports, IProjectVersionedValue`1 update, CancellationToken cancellationToken)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.<>c__DisplayClass172_0.<ProjectSubscriptionService_ChangedAsync>b__0(IProjectVersionedValue`1 treeSnapshot, ConfiguredProjectExports configuredProjectExports, CancellationToken ct)
   at Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeProviderBase.<>c__DisplayClass94_0.<<Initialize>b__1>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.VisualStudio.ProjectSystem.Utilities.Designers.ProjectTreeProviderBase.<>c__DisplayClass101_0.<<SubmitTreeUpdateAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.VisualStudio.ProjectSystem.Utilities.CommonProjectSystemTools.Rethrow(Exception ex)
   at Microsoft.VisualStudio.ProjectSystem.ProjectErrorReporting.<>c__DisplayClass6_0.<SubmitErrorReport>b__0()
   at Microsoft.VisualStudio.ProjectSystem.ExceptionFilter.<>c__DisplayClass2_0.<Guard>b__0()
   at GuardMethodClass.GuardMethod(Func`1 , Func`2 , Func`2 )
Project: C:\Solutions\Momondo\Momondo.Apps.Web\src\Momondo.Apps.Web.Structure\Momondo.Apps.Web.Structure.xproj
PRIOR tree: 
<removed to reduce file size - was around 8MB>
ACTUAL tree: 
lazy.js (visibility: visible, capabilities: {SourceFile FollowsParent}), FilePath: "C:\Solutions\Momondo\Momondo.Apps.Web\src\Momondo.Apps.Web.Structure\Client\Components\Aurelia\lazy\lazy.js"
Inner exception:
System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
   at Microsoft.VisualStudio.ProjectSystem.Designers.UnattachedProjectTreeNode.Find(IntPtr nodeId)
   at Microsoft.VisualStudio.ProjectSystem.Designers.ProjectTree.Find(IntPtr nodeId)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.RemoveAnyConflictingSiblingPriorToRename[T](T intendedRenameNode, String newCaption, IProjectTree& conflictingNode)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.RenameFileItems(IProjectTree tree, IImmutableDictionary`2 changeMap, IProjectChangeDescription change, IImmutableDictionary`2 projectData, ConfiguredProjectExports configuredProjectExports)
   at Microsoft.VisualStudio.ProjectSystem.Designers.PhysicalProjectTreeProvider.OnProjectSubscriptionChanged(IProjectTreeSnapshot treeSnapshot, ConfiguredProjectExports configuredProjectExports, IProjectVersionedValue`1 update, CancellationToken cancellationToken)
<---

===================