There are some issues with the xbox version, having to do with which version of the xbox you've got, whether or not you've got a mod chip installed so your game runs from the hard drive...
But so far the only fix Obsidian has released for the xbox involves flushing the cache...
If you have some major problems, this is the first thing to try...(black screen, quests not working right, etc)
I believe this is how you do it. (someone correct me if I've got any of the details wrong)
open the drive, go into memory, then delete all game configurations in the hard drive. Then insert and run 3 games, it doesn't matter which ones, I used Halo, Soul Calibre, and Kotor 1. Insert each disk, let it run past the start screen, then eject. After running 3 games, open the drive again, and go back into the memory screen. You should see 3 game configurations in the memory screen. Now the cache is filled up, so insert Kotor 2, and play. Hopefully problems are fixed.
