[dnanian]

A couple of things here, Russell.

First, it's very strange that the volume -- the destination volume -- couldn't be unmounted & erased. That indicated that *something* unusual was accessing that drive, or had it busy: I'd strongly suggest being careful about what you're running while you're trying to do the backup.

Anyway, the other issue is covered elsewhere on the Forums, including a script that'll ignore the .hotfiles.btree. If you'll drop me a note via support email, I'll provide you with the script and a temporary key so you can actually verify that it works.

Sound OK?