So, when I try to boot the game (either from Impulse or the .exe itself) I just get a black screen into the default resolution of the game, and then it just returns to the desktop. No crash prompt, no debug.err, nothing. It just switches resolution, blanks the screen out, then returns to the desktop.
I have no idea what's going on here.
Here's my dxdiag: http://pastebin.ca/1923629
It's an iMac running in bootcamp, but all other games work without any issues.