Getting that too. I'm going to try some things, like DX9, and post if I can figure anything out. I guess I"ll have to resort to the ticket system eventually.
Okay, well, running it as Direct X9 works. You have to run the OffworldD3D9.bat file, instead of running it direct through steam. You may be able to experiment with adding that to the steam parameters to avoid having to manually run the .bat file. I'm glad I can at least play. Kinda strange. I was able to play at D3D-11 before today's update.