Klauss++ - 2010-01-08

Before anything, though, be sure to upgrade your GPU drivers - these kind of graphical bugs are often triggered by driver bugs that are resolved most easily by downloading and installing up to date drivers.

If that fails, if possible, attach a screenshot, stderr.txt & stdout.txt (which are on the game's folder), and your OS and GPU model and driver versions, which would help in debugging. Also, a way to consistently reproduce this bug would also be appreciated... sometimes attaching your savegame in a state prior to the bug (so that we may load it and then do something that triggers the bug) also helps.