After I upgraded from 3.0.8 to 3.0.9, everything on the WP dashboard disappeared – a blank white page except for the sidebar – no matter what was selected from the sidebar.
The WP Dashboard displays properly after renaming the Symfony directory. Thanks for the fix!
I trust Daniel will post updated ver 3.1.0 promptly.
BTW, the forum at https://marketpress.com/support/forum/plugins/backwpup-pro/ is not of any help.