I am trying to use the DecklinkAPI to do just a preview capture. I was excited to see finally a sample with CShap in the latest SDK. However once compiled, the CSharp application is returning a black screen. the C++ sample works fine. I just use CSharp and hardly understand C++. I tried to change the IDeckLinkDX9ScreenPreviewHelper with IDeckLinkGLScreenPreviewHelper using sharpGL, but still struggling to get it to work. Any help??? I just bought a DEcklink Quad 2. I am using Windows 10 64 bit and Visual Studio 2013.