This is strange! 1.2.2 doesnt work. No backup and no error-message either. But the version in this thread works great, so I stick with this one until problem solved 🙂
I have the same problem and would like some advice. First time everything was backed up including sql-dump. Now the site is backed up OK and a fresh sql-dump is made locally but the sql file on dropbox has never changed since first time.
Regards