Please tell us more details about the problem. Did you get a BSOD? Also, are you talking about 3.0 build 53?
After allowing CSC to do it's thing, Firefox wouldn't load at all and Windows Explorer couldn't open some disks, then locked up. Rebooting did not solve the problem. <Ctl-Alt-Del> did nothing. If none of these essential programs worked, then I didn't consider it worth continuing the investigation. There was no BSOD. The system would apparently boot as normal, then the above problems would appear immediately.
As to version, it was CSC_3.0.172695.53_xp_vista_server2003_server2008_win7.exe (10,577,152 bytes) which looks like 3.0 build 53 to me, but I'm not going to reinstall it just to read the "About" tab. Sorry, but I just don't trust it.