COMException: Exception from HRESULT: 0x88980406
StackTrace:
   at System.Windows.Media.Composition.DUCE.Channel.SyncFlush()
   at System.Windows.Media.MediaContext.NotifyChannelMessage()
   at System.Windows.Media.MediaContextNotificationWindow.MessageFilter(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)