Kemar Elim will now appear on Onderon after you arrive back there the second time, enabling the completion of the sidequest. He's out of the way of the soldiers, so you may have to search a little to find him. Also, be warned that you can _only_ start the quest the first time you go to Onderon. If you try to do so the second time, he won't speak to you.   I've also cleaned things up with the holocron in the tomb a bit, so that it's less...messy. Hopefully, this will eliminate any errors.