Oculus SDK OpenGL Demo - OculusRoomTiny Sample

As requested by some of you, I have updated the code to the newest SDK 0.4.4 Beta version.
I have enclosed it in the Oculus SDK for Windows 0.4.4 Beta. You can download it here:

http://federico-mammano.github.io/Oculus-SDK-0.4.4-beta-OpenGL-Demo/

There seems to be something wrong with this implementation, as I'm not able to get anything other than a black screen in either "direct" or "extended" modes on Windows 8.1. All of the other samples work, and OpenGL works in general on my machine. In "direct" mode, the Rift comes on, and the "mirror" window opens, it's just all black. I've stepped through the render code and everything looks OK (no GL errors). Any clues what might be going wrong?

I am also getting a black screen when using the OpenGL sample. Please update me if you end up figuring out why this happens. I don't know how to even start debugging this... Ideally I would first like to see that at least the OpenGL rendering part works, independent of Oculus - i.e. disable all Oculus related code so OpenGL will render directly to the screen.

I am using a GeForce GT 730 M on a Lenovo laptop.

Haven't had a chance to look into this much yet. May try an older SDK, to see if that works. Seems like it might be related to this: viewtopic.php?f=17&t=16429

I ended up using a different example, below, as a starting point for figuring out how to integrate Oculus + OpenGL:
viewtopic.php?f=20&t=17842