Creating C# WPF apps crash VS with ArgumentNullException

[mattscheffer]

Version Used:
VSUML 26507.1
Steps to Reproduce:

1. Install VS with .NET Desktop Development
2. Create a new C# WPF App

Expected Behavior:
Project creates successfully and you are able to work on it.
Actual Behavior:
Project creates followed by crashing VS.

Exception:

CLR: Managed code called FailFast, saying "System.ArgumentNullException: Value cannot be null.
Parameter name: key
   at System.Runtime.CompilerServices.ConditionalWeakTable`2.TryGetValue(TKey key, TValue& value)
   at System.Runtime.CompilerServices.ConditionalWeakTable`2.GetValue(TKey key, CreateValueCallback createValueCallback)
   at Microsoft.CodeAnalysis.Serialization.ChecksumCache.GetOrCreate(Object value, CreateValueCallback checksumCreator)
   at Microsoft.CodeAnalysis.FindSymbols.SyntaxTreeIndex.<GetChecksumAsync>d__8.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.CodeAnalysis.FindSymbols.SyntaxTreeIndex.<PrecalculateAsync>d__51.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.CodeAnalysis.SolutionCrawler.SolutionCrawlerRegistrationService.WorkCoordinator.IncrementalAnalyzerProcessor.<>c__DisplayClass31_1`1.<<RunAnalyzersAsync>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.CodeAnalysis.SolutionCrawler.SolutionCrawlerRegistrationService.WorkCoordinator.IncrementalAnalyzerProcessor.<GetOrDefaultAsync>d__33`2.MoveNext()"

[Pilchie]

Fixed yesterday in #19357.

[mattscheffer]

@Pilchie Wasn't this pushed to VSUML? I just upgraded to the latest build which contains 20170509.8 and I'm still seeing the crash.

[Pilchie]

Should have been I think. @tmeschter ?

[Pilchie]

And @jasonmalinowski who I think did this insertion.

[jasonmalinowski]

@mattscheffer Can you provide a dump? Dumps always make the mysterious clear.

[mattscheffer]

Provided dump via email. Can send again if needed. Reopening bug as this is still crashing VS in vsuml

[CyrusNajmabadi]

Need link to the dump to investigate.

[CyrusNajmabadi]

Your dump doesn't seem to match the stack trace above. The dump crashes here:

StreamJsonRpc.RemoteInvocationException: Object reference not set to an instance of an object.
   at Microsoft.CodeAnalysis.DesignerAttributes.AbstractDesignerAttributeService.<TryAnalyzeProjectInCurrentProcessAsync>d__5.MoveNext()

Which is an issue that @heejaechang is fixing here: #19466

[CyrusNajmabadi]

Resolving as dupe of https://devdiv.visualstudio.com/DevDiv/_workitems?id=433730&_a=edit