Black Plague Research Lab bug--HELP!

[Peahead]

I've been playing Black Plague and so far I'm loving it. But whenever I use the key card (retrieved from the body in the Kennel) to get into the research lab, the audio loops and the video freezes up after a loading screen. I have an ATI 5770, and I've heard ATI cards don't do so well on this game. But I don't know if it's a video problem or something else. If anyone has any information, please let me know. Thank you.