Just used the plugin for first time as a test. Backing up to dropbox.
The backup seems to have worked however I have a single error in the log:
1. Trying to make a list of folders to back up …
WARNING: opendir(/home2/MYDIRECTORY/public_html//sites/) [<a href='function.opendir'>function.opendir</a>]: failed to open dir: No such file or directory
Any ideas what this might be? In fact there is no /sites/ folder in my Cpanel directory structure so I'm not sure where that came from...?