Penumbra Black Plague Black Screen on Start up

[BillSmauz]

I recently got the Penumbra pack from Steam, I played through Overture and it worked great! However, when I got to Black Plague I had this issue which I am unable to solve. Basically what occurs is that when I start up the game, the screen just goes black and blank with nothing appearing. I've left the game running for a few minutes just to see if it loading but it remains on the black screen, nothing pops up. This is strange because I only have this issue with Black Plague. I tried Requiem and it loads perfectly fine.

System Info:
Windows 7 64-bit
6GB RAM
Intel Core i7 @ 3.07 GHz
NVIDIA GeForce GTX 460 SE ~4GB
1920x1080 Display