Help with Amnesia

[Mr. Hippie]

Hello, I purchased Amnesia about a month back and never got around to playing it until recently. Everything seems fine and works normally except when I play, the lights flicker erratically and the texture of the floor changes and warps in shape. Occasionally even dropping off into nothing. Other than being unable to see the floor and the lights making it difficult to see anything at all, there is nothing wrong with the gameplay. No crashes or freezes, just bizarre graphic glitches. I have changed all of the settings in countless ways and re-installed it many times. Here is the hpl.log file.
[attachment=850] [Not sure how to put the file in anyhow else, sorry]
Also, I run Windows Vista, in case that effects anything.