eCos: i had this once. it has nothing to do with hardware, drivers, etc.
at that point, you have to speak with henselt, but he is not in the tent, the game fails to "teleport" him to you for the cutscene i guess. what i did was, went back a save, made sure he WAS in the tent before going in to start the cutscene.
hope it helps.
edit: hmm, i think i misread the first time. is the black screen right after the exorcism cutscene, or did henselt told you to go to his tent, you get the BS when you go to the tent??
AFTER the exorcism.
Gregster6: I had this a few times at different points during the game.
I just reloaded a previous save and got on with it.
I think once the problem repeated (ie black screen again) but only once. The rest of the time I was able to progress. How many times have you tried re-doing the section OP? Just once or twice or many times.
Good luck
Many, many, many times...
thx for any & ALL help! :)