It appears that using the supported install files for the steam client on a clean install of CXG now carries DX 9 into the bottle by default (Microsoft DirectX Runtime - Modern?). This means that most games capable of DX 9 also default to DX 9 mode and refuse to run for me. In particular, any time I attempt to run a semi-recent game I will briefly get a white screen followed by a silent (e.g. no error box pops up) crash to desktop. So far I've only been able to alleviate this by forcing games to run in DX 8 via command line args or config file editing.
Looking around it seems that I'm the first (or only) person to have this problem as I could find no other posts describing similar problems. Is DX 9 functioning for everyone else using CXG 9.0b4? What could be wrong with my system to break it?
FYI:
CXG 9.0b4
OSX 10.5.8
A1226 Santa Rosa MacBook Pro
Intel C2D 2.4 GHz
4 Gb Ram
Nvidia 8600M GT (technically DX 10 capable under Boot Camp Windows Vista/7)
I should also point out that even in DX8 mode games that used to function exceptionally well (HL 2 for instance) stutter constantly now to the point that it's barely worth playing them.
Also, as a secondary issue, installing games via steam no longer creates an app which allows me to launch the game directly.