http://bugs.winehq.org/show_bug.cgi?id=28259
--- Comment #1 from Stefan Dösinger stefandoesinger@gmx.at 2011-09-03 13:44:41 CDT --- The issue is fairly straightforward, EnumDisplayFormats and friends should check for NULL before trying to convert the DDSD. I have a patch with tests, I'll send it later today or tomorrow.