For sheer idiocy it would have to be when I went to delete my 'System Folder' in terminal and left off the final '. What prompted this thread though was that I just went to click on a link with my wacom pen using the front rocker switch and it didn't work. So I checked in system preferences>wacom and everything was gone!. No worries I thought because only yesterday I backed up my hd with super duper and I was really glad because it became useful immediately and would save me all the reprogramming. So I replaced the preference file with the back up but it was the same. Puzzled I opend the preference file and the backup preference file and compared them line by line and found they were the same. All the programs were associated. So I replace it again, logged out logged in, same problem. So I unplugged the wacom replaced the file yet again rebooted the mac, plugged the wacom back in...still the same no associated programs. I was just about to start a thread when I noticed...that I'd gone over to the other mac which also has a wacom and left my pen there and picked up their pen... Don't you hate it when that happens.