Hey BR better be more detailed next time lol =P
GC v1 and DS9FX are compatible and work together. GC v1.0/Beta v1.1 and DS9FX Xtended are not compatible, yet. =P
BTW for future reference, this problem BR reported was actually a problem with GC (missing attribute in Races.py), which even another beta tester reported.
I fixed it, and this other beta tester said it was ok, but for some reason it didn't worked for BR and he continued to have a BSOD...
BR you're still having a BSOD even with that updated Races.py? If so can you get a console report of the BSOD?