When ever I try to load this game, well any source mod game, it crashes. It used to work perfectly. CSS runs find, I have all the source SDK bases installed as well as CSS. When Ever I try to load a map, it crashes half way with no error. Edit: just realized that Source SDK is not installed, does that affect it?
You dont need the source sdk, you only need the source sdk base - orange box. Try verifying its integrity.
indeed, it sounds like your Source SDK bases have been fuxed (CSS uses its own exe). Delete + Redownload, or verify integrity.