Another thing: I encountered some problems with the engine which were solved after restarting my PC. Once it was an input bug (one of the keyboard inputs were constantly sent) and another time it was something at the directx setup process (engine couldn't start because it was unable to initialize dx9). I belive might have something to do with windows updates requiring a restart to be fully applied.

Anyway, I don't think something like this is the problem in your case but you might want to keep it in mind.