Never mind, the bug is fixed and i can go through the entrance now

Well if I am complete with the desert quests I am supposed to do the bandit quest, problem is it won't start, therefore I must still be missing something. Where is the "secret cave" so i can complete that part of the quest and make sure i'm done with tulimshar chain

I'm doing the desert cave quest, i finished turning the keys and collected the reward. Now i'm supposed to talk to someone named Sema inside the cave, I don't see anyone or anything new after completing the last quest. I'm running the portable version on windows 7 professional