Why do u crash?????

gistfile1.txt

  <entry>
    <record>10589</record>
    <time>2014/03/09 11:56:50.360</time>
    <type>Error</type>
    <source>Editor or Editor Extension</source>
    <description>System.InvalidOperationException: Attempting to get the view from an adapter in state Closed
   at Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.get_WpfTextViewHost()
   at Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.ClearCommandContext()
   at Microsoft.VisualStudio.Editor.Implementation.VsMouseProcessor.PostprocessMouseLeftButtonUp(MouseButtonEventArgs e)
   at Microsoft.VisualStudio.Text.Utilities.WpfMouseProcessor.&lt;&gt;c__DisplayClass30.&lt;UIElement_MouseLeftButtonUp&gt;b__29()
   at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)</description>
  </entry>
  
Complete stack trace:

Microsoft.VisualStudio.Editor.Implementation.dll!Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.WpfTextViewHost.get()	
Microsoft.VisualStudio.Editor.Implementation.dll!Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.ClearCommandContext()	
Microsoft.VisualStudio.Editor.Implementation.dll!Microsoft.VisualStudio.Editor.Implementation.VsMouseProcessor.PostprocessMouseLeftButtonUp(System.Windows.Input.MouseButtonEventArgs e)	
Microsoft.VisualStudio.Platform.VSEditor.dll!Microsoft.VisualStudio.Text.Utilities.WpfMouseProcessor.UIElement_MouseLeftButtonUp.AnonymousMethod__29()	
Microsoft.VisualStudio.Platform.VSEditor.dll!Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(object errorSource = null, System.Action call)	
Microsoft.VisualStudio.Platform.VSEditor.dll!Microsoft.VisualStudio.Text.Utilities.WpfMouseProcessor.UIElement_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)	
PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)	
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)	
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)	
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {Microsoft.VisualStudio.Text.Editor.Implementation.WpfTextView}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, bool reRaised = true)	
PresentationCore.dll!System.Windows.UIElement.ReRaiseEventAs(System.Windows.DependencyObject sender = {Microsoft.VisualStudio.Text.Editor.Implementation.WpfTextView}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, System.Windows.RoutedEvent newEvent)	
PresentationCore.dll!System.Windows.UIElement.OnMouseUpThunk(object sender, System.Windows.Input.MouseButtonEventArgs e)	
PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)	
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)	
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)	
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {Microsoft.VisualStudio.Text.Editor.Implementation.SelectionAdornment}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs}, bool reRaised = false)	
PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender = {Microsoft.VisualStudio.Text.Editor.Implementation.SelectionAdornment}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs})	
PresentationCore.dll!System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseButtonEventArgs})	
PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args, bool trusted)	
PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea()	
PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input)	
PresentationCore.dll!System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport inputReport)	
PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.ReportInput(System.IntPtr hwnd, System.Windows.Input.InputMode mode, int timestamp, System.Windows.Input.RawMouseActions actions, int x, int y, int wheel)	
PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.FilterMessage(System.IntPtr hwnd = 0x000217b0, MS.Internal.Interop.WindowMessage msg = WM_LBUTTONUP, System.IntPtr wParam = 0x00000008, System.IntPtr lParam = 0x025f0247, ref bool handled = false)	
PresentationCore.dll!System.Windows.Interop.HwndSource.InputFilterMessage(System.IntPtr hwnd = 0x000217b0, int msg = 0x00000202, System.IntPtr wParam = 0x00000008, System.IntPtr lParam = 0x025f0247, ref bool handled = false)	
WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd = 0x000217b0, int msg = 0x00000202, System.IntPtr wParam = 0x00000008, System.IntPtr lParam = 0x025f0247, ref bool handled = false)	
WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o)	
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)	
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source = {System.Windows.Threading.Dispatcher}, System.Delegate method, object args, int numArgs, System.Delegate catchHandler = null)	
WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs)	
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd = 0x000217b0, int msg = 0x00000202, System.IntPtr wParam = 0x00000008, System.IntPtr lParam = 0x025f0247)	

I'd argue this is just a straight up bug in Visual Studio. Either the SimpleTextViewWindow or VsMouseProcessor class simply aren't properly accounting for the fact that the IWpfTextView could be closed at this point and is throwing.

I'm looking at the decompiled code for 2013 and I can't 100% see where this is happening. But the code path does seem to not be accounting for this possibility

If the handling is performed using an IMouseProcessor instead of an IOleCommandTarget, I'm fairly certain this situation would be avoided. Hopefully if he can track down which extension is using the IOleCommandTarget it could then be updated to use the new interface.

Also, the code in VsMouseProcessor could be updated to check the IsTextViewHostAccessible property.

if (SimpleTextViewWindow != null && SimpleTextViewWindow.IsTextViewHostAccessible)
{
    SimpleTextViewWindow.ClearCommandContext();
}