Hello, same problem, I can't seem to be able to set the shader to high or medium quality, it says my video card is not supported.
I'm running the game on the following specs:
processor: i7 Q720
os: win7 64 bit
vid card: ATI Mobility Radeon 5870
I am also using the latest drivers provided by ATI at the moment (13.1).
I'm sure the problem is not the performance of my video card, because I have seen that the game can be played with high shaders on systems with lower cards.
I will appreciate your help.