I updated one install to the latest version, and all seems to upgrade fine.
However, one another install I needed to reauthenticate with Dropbox before it worked again, so I browsed to the Jobs of this upgraded install too.
But the job page is only showing the headerbar part, and even seems to mess up the Backwpup icon in the icon navigation bar and more.
Add a new job shows a complete empty page..
The only error I discovered in the PHP is:
[Thu Feb 28 13:23:10 2013] [error] [client 10.0.20.6] PHP Fatal error: Class 'OpenCloud\\LoadBalancerService\\LoadBalancer' not found in /home/vvncnl-2001/data/www/gt86fun.com/wp-content/plugins/backwpup/sdk/OpenCloud/lbresources.php on line 355, referer: http://www.gt86fun.com/wp-admin/admin.php?page=backwpup
Which doesn't seem to be related, since this error doesn't show up anymore when I try to view the Jobs lists again, or try to add an new job.