crash problem

[Hu-Said]

System.Runtime.InteropServices.COMException (0xC00D36B2)
at WinRT.ExceptionHelpers.g__Throw|39_0(Int32 hr)
at ABI.Windows.Media.Capture.Frames.IMediaFrameReaderMethods.StopAsync(IObjectReference _obj)
at SIPSorceryMedia.Windows.WindowsVideoEndPoint.CloseVideoCaptureDevice()
at SIPSorceryMedia.Windows.WindowsVideoEndPoint.VideoCaptureDevice_Failed(MediaCapture sender, MediaCaptureFailedEventArgs errorEventArgs)
at System.Threading.Tasks.Task.<>c.b__128_1(Object state)
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()