I run C on a laptop with 256M RAM P3 1.6Ghz with no problems. I ran 1.1 before, and now run C2 with the patch without ahitch. Try trashing the Carrara.ini file. Carrara will rebuild the file, (it's the preference file,) and then you'll be at a fresh starting position. Actually, if you save it to aanother folder, with a new name (e.g. carraraOLD.ini,) if this doesn't fix the problem, then send the .ini file to eovia support. They can check into it to see if it's a bug that way. Good luck!