http://bugs.winehq.org/show_bug.cgi?id=11935
--- Comment #1 from Stefan Dösinger stefandoesinger@gmx.at 2008-03-08 16:36:44 --- It still starts up happily without this format and works. I don't know why it checks for it, but wined3d has support for this format if your GPU has it and you enable FBOs.