ArgumentNullException during OmniSharp startup inside Visual Studio Code

[miguellira]

First off, this may not be the proper repo to report this, please advise.

After installing Mono 4.1.0 from source in order to get around the EndOfStreamException (#498) I am now getting the following inside the Visual Studio Code OmniSharp output log.

Starting OmniSharp at '/Users/miguellira/GitHub/Home/samples/latest/HelloMvc'...
[INFORMATION:OmniSharp.Startup] Omnisharp server running on port '2000' at location '/Users/miguellira/GitHub/Home/samples/latest/HelloMvc' on host 4395.
[INFORMATION:OmniSharp.AspNet5.AspNet5Paths] Using runtime '/Users/miguellira/.dnx/runtimes/dnx-mono.1.0.0-beta5-11682'.
[INFORMATION:OmniSharp.AspNet5.AspNet5ProjectSystem] Scanning '/Users/miguellira/GitHub/Home/samples/latest/HelloMvc' for ASP.NET 5 projects
[INFORMATION:OmniSharp.AspNet5.AspNet5ProjectSystem] Found project '/Users/miguellira/GitHub/Home/samples/latest/HelloMvc/project.json'.
[INFORMATION:OmniSharp.AspNet5.DesignTimeHostManager] Running DesignTimeHost on port 57035, with PID 4410
[INFORMATION:OmniSharp.AspNet5.AspNet5ProjectSystem] Connected
[INFORMATION:OmniSharp.MSBuild.MSBuildProjectSystem] No solution files found in '/Users/miguellira/GitHub/Home/samples/latest/HelloMvc'
[INFORMATION:OmniSharp.Middleware.LoggingMiddleware] /codecheck: 404 5ms
[ERROR:Microsoft.AspNet.Diagnostics.ErrorHandlerMiddleware] An unhandled exception has occurred: Value cannot be null.
Parameter name: attributeType
System.ArgumentNullException: Value cannot be null.
Parameter name: attributeType
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <0x10206ae00 + 0x00029> in <filename unknown>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) <0x102068e20 + 0x000b3> in <filename unknown>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) <0x102068d80 + 0x00093> in <filename unknown>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) <0x102068d30 + 0x0003a> in <filename unknown>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () <0x102068d10 + 0x00012> in <filename unknown>:0 
  at Microsoft.AspNet.Builder.RouterMiddleware+<Invoke>d__5.MoveNext () <0x107801800 + 0x003fc> in <filename unknown>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () <0x10206ae00 + 0x00029> in <filename unknown>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) <0x102068e20 + 0x000b3> in <filename unknown>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) <0x102068d80 + 0x00093> in <filename unknown>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) <0x102068d30 + 0x0003a> in <filename unknown>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () <0x102068d10 + 0x00012> in <filename unknown>:0 
  at Microsoft.AspNet.Diagnostics.ErrorHandlerMiddleware+<Invoke>d__4.MoveNext () <0x1078004c0 + 0x003d7> in <filename unknown>:0 

Statement completion and all of the other OmniSharp goodness fails. :(

[aspnet-hello]

This issue is being closed because it has not been updated in 3 months.

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