I just installed CS3 a few days ago. I was fine with CS2, but I needed the upgrade in order to open some files from another system that were saved as *.ai CS3 files. Yesterday, I was working on a project and to my shock, horror and dismay, I couldn't save the file. "Could not save the file because of an unknown error [CANF]" is the dialog that appeared onscreen. I figured, "Okay, I'll just select all/copy/quit/relaunch/create a new document/paste, no problem." Wrong. I also could not copy anything to the clipboard.
I Googled the "CANF" error. Seems to be a complaint among many CS3 users. The fix I found (for Mac 10.4.11) involved moving the AI Preferences folder contents to the desktop and relaunching AI. I did this. No more "CANF" error, but now when I try to save a document, "An unknown error occurred." pops up.
Has anyone else had this problem with CS3? If so, what fix will work to correct these error messages?