I HAVE AN IDEA HOW TO COPE WITH THESE PROBLEMS.
As I understand, such problems only occur to some people in KOTOR II. Therefore, you can send your savegame to someone who doesn't have the problem, have them pass the troublesome area and resend you the updated save so you can move on from there.
So, gullf1sk or anyone else, please help me with that. If you want I can do the same for you. Please.