My partner and I received new Win7 PCs. He installed Adobe Illustrator CS2 with no problems. After I installed it, when I try to Save in any format to anywhere, I get "An Unknown Error Has Occurred". Internet says it is either a corrupt preference file or bad installation due to an antivirus running (which it was at the time of install). First, I tried to delete the preferences file (Allprefs), then everything in the main preferences folder (C:\Users\Randy.UNITED\AppData\Roaming\Adobe\Adobe Illustrator CS2 Settings), without success. Then in uninstalled it and deleted any folder related to Illustrator. I then reinstalled it without the antivirus running, but still receiver the error. Maybe there is a folder I missed deleting?