title: VS2010: Studio crashes when WPF designer opens any XAML control
body: <p>Every time I try to open XAML control, WPF-designer starts and at the same time as control representation is rendered Visual Studio crashes. I can observe WPF control representation and XAML tags for several seconds. </p>
  
  <p>Windows 7, Visual Studio is launched as administrator. </p>
  
  <p>There is error in event log: </p>
  
  <p>Any ideas? </p>
  
  <p>Application: devenv.exe
  Framework Version: v4.0.30319
  Description: The process was terminated due to an unhandled exception.
  Exception Info: System.AccessViolationException
  Stack:
     at EnvDTE.CodeNamespace.get_Members()
     at MS.Internal.VSSymbols.SymbolProvider.AddNamespaces(EnvDTE.CodeNamespace, System.Collections.Generic.Dictionary`2)
     at MS.Internal.VSSymbols.SymbolProvider.BuildNamespaces()
     at MS.Internal.VSSymbols.SymbolProvider.b__2(System.Object, System.EventArgs)
     at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr, System.Object[], System.Object, Int32, Boolean, System.Object[] ByRef)
     at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage, System.Runtime.Remoting.Messaging.IMessageSink)
     at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.DoAsyncCall()
     at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.ThreadPoolCallBack(System.Object)
     at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(System.Object)
     at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
     at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
     at System.Threading.ThreadPoolWorkQueue.Dispatch()
     at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()</p>