http://bugs.winehq.org/show_bug.cgi?id=10234
--- Comment #5 from Chris chris.kcat@gmail.com 2007-10-30 03:17:31 --- I've followed those steps, and I can't reproduce it here. Tried with both virtual desktop, and managed. nVidia Geforce 8600 with the latest drivers.
It appears, though, that it's trying to call glFlush when there isn't a valid context. Both traces have..
** Warning: Pixel format (1) is of unknown type; may be slow (software rendering)!
Can you paste a +wgl,+opengl log?