Tried starting a new game after loading a game the following:

http://dl.dropbox.com/u/6230256/debug.err
Ignore the dots, that's my graphic card's fault.
After the screenshot, I built a city, which moves my hero and revels 2 nearby loot bags. However, I tried to move the hero, which didn't work and then crashed (couldn't find the matching zip file for the dump I'm afraid).