http://bugs.winehq.org/show_bug.cgi?id=16516
--- Comment #4 from Henri Verbeet hverbeet@gmail.com 2009-07-28 14:06:01 --- (In reply to comment #3)
fixme:d3d:debug_fbostatus Unrecognied FBO status 0x00000000 fixme:d3d:context_check_fbo_status FBO status unrecognized (0)
Which driver are you using? Mesa? 0 is not a valid return value for glCheckFramebufferStatus(), you'll want to report that to your driver vendor if it still happens with current versions of the driver. The crash probably happens because the driver returns 0 while rendering onscreen as well, which would result in dereferencing context->current_fbo while it's NULL.