Black Texture Bug (Black Plague)

[MrIcabod123]

So I recently got Penumbra: The Black Plague on Steam and started it up, right when I get up in the first room I noticed that some of the textures (the papers, pipes on the wall and trash can lid on the floor) were just black, I could see the textures fine at a certain distance/angle, but they were still just black. So I exited out of the game, installed all the most recent patches/updates, and the textures are still the same as before.

Can someone please help me with this? I've just finished Amnesia and found it to be an amazing game so now I want to play Penumbra.

Edit: I play on Windows 7 64 Bit with an ATI Mobility Radeon HD 5650 graphics card if that helps.