Can you leave Verdistis by the main gate, or by teleporter stone? Doesn't sound like it.

Try deleting all of the files in the '..\Divine Divinity\Run\Dynamic' folder. Then start Divinity, load the save and try leaving.
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.

A possible work-around is Teleporting Anywhere, via hex editor, but even if it works, the problem may re-occur the next time you try to enter/leave Verdistis (depending on what is causing the problem in the first place).

Do you have any recent saves you can re-load, to see if they also have this problem?


For the patch, it might help to try saving it to disk first, then run it. See this list of freeware download managers.