http://bugs.winehq.org/show_bug.cgi?id=18824
--- Comment #9 from Stefan Dösinger stefandoesinger@gmx.at 2009-06-08 11:32:26 --- "*base (nil)*" doesn't sound right. That means the glMapBuffer call fails.
I don't know what to do with this right away. The question is if the failing glMapBuffer is a symptom or the cause of the problem. If it is a symptom, it will take a while to find what's really wrong. If it is the cause, we could catch the error and fall back to the behavior before the patch for the buffers where MapBuffer fails.
I need some more info: *) Are there any gl errors or out of memory errors before the crash? *) What graphics card and driver are you using?