getting "Exception from HRESULT: 0xC00DABE0" in MediaCapture sample of c#/xaml metro style app

I have checked this MediaCapture sample. I tried to record audio but when I press "StartDevice" button, I got "Exception from HRESULT: 0xC00DABE0". My audio device is working perfectly, I have checked with Windows 8's built in sound recording app. Can anyone please help me to sort out this issue ?

I have tried the same app with HTML5/JS sample, it records the audio but C#/XAML app gives exception.

Finally found the solution

change this line into sample

await m_mediaCaptureMgr.InitializeAsync();

to this

await m_mediaCaptureMgr.InitializeAsync(settings);