This is unfortunate, I’m having the exact same issues right now. I was really hoping to play Portal 2 with my 3D projector. Did you ever figure this out? If there’s any way to troubleshoot or potentially solve this issue, I’m all for it. The only other game I really wanted to try was the witcher 3, and while VorpX at least attached itself to Portal 2, albeit with that black screen, it doesn’t even manage to get that far in the witcher 3. I’m just not sure what I’m doing wrong, but it’s been a pretty dissappointing experience so far. Hoping there are solutions…