This is getting really frustrating, I'm in act 3 now and I can't complete the harper / nine fingers stoylines because Jaheira permanently left the party but is somehow in my camp. I can talk to her about my deeds outside the camp, so the game clearly sees her as existing within the camp, but when I ask her to join me nothing happens.
It would of been one thing if this bug made is so that she at least PERMANENTLY left, but she magically appeared in my camp.... I looked through the config files and couldn't find anything. So stupid.