This may not be fixed for awhile. Reading the Larian News in an interview with Swen Vincke on October 9, he said the team is on holiday after completing patch 3. No telling when they'll be back. It'd be nice if there's at least a skeleton crew who can fix this problem. I've cleared absolutely everything I can find and at a dead stop because I can't leave for the Nameless Isle without Tarquin, still broken.