SuperDuper does not quit

[SuperDuperUser]

Originally Posted by rknyc

Just did a backup (Smart Update) and when it was done, SuperDuper did not quit when I chose "quit" from the File menu. Nothing happens. I had to force quit. I also tried command Q--no luck. Any way to fix this? I'm using a MacBook Pro/OS 10.4.9/2GB RAM.

I had same experience, yes there was a scheduled back up and the external FW drive was not attached. So I did CMD-S, still would not quit; Save-As, still would not quit, had to Force Quit.

Why? How avoid in future? thanks.