Yes, that is a possibility. As with any backup, it will restore it to the way it was at the time of the last backup. So if you had a buggy script installed when you did your backup, it will be the same when you restore from backup. But this doesn't backup the entire registry tree, just the MediaMonkey registry file. And as far as I know, you can restore the MM registry file from system to system. I have done it on two occasions and didn't have any problems. But you might have issues restoring a registry file from MM3 to MM4.
I hope that helps!



