Try closing out of the script completely and restarting. If not then try restarting Simba all-together.
My apologies, this was in response to whomever got the error when starting the script. I know that restarting the script from scratch usually fixes any error. One more thing and I'll stop posting in here haha. For karamja it is best to do the quest so yo can just right click and pay the fare. Seems to work flawlessly then. occasionally running to cook the fish at the tree it will go inside with bananas, but it has seemed to fix itself. If you edit the coordinates a tiny bit you should have no problems at all.

