Do you have a save just before going to Verdistis? If so, delete all of the files in the '..\Divine Divinity\Run\Dynamic' folder, then re-load that save.
This folder is used as a cache for the game. Files are created / copied there from the save game folder when you load, and written / copied from that folder when you save a game. The files will be re-created as required the next time you start Divinity. If there was a corrupt file in that folder, deleting the files should fix the problem.
It seems one or more files from your previous game got carried over into your new one.