I have tried several times and rebooted inbetween to correct. SuperDuper is locking up when I try to back up. It works fine until it gets to the same spot just under 1g being loaded, and about 4 minutes into backuping, and then it locks up. It has done the same thing 4 times. i have waited figuring it was just copying a large file but it does go any further and remains locked up. WHY?