http://bugs.winehq.org/show_bug.cgi?id=7211
--- Comment #8 from Pierre Bourdon delroth@gmail.com 2008-04-19 17:52:34 --- I just tried to launch GW again (I have not tried to launch it for 1 month), and it now starts if I disable the "Vertex Shader Support" in winecfg. It may have been fixed by a software update (wine or nvidia).
I could not test the game as it bugs when displaying a precise point of the land we can see when logging in. I tried three times, and the game _always_ bugs at this point.