Restore commands greyed

Hi,

First, I'd like to thank you for sbackup which is a excellent backup tool I use everyday.

Since I upgraded to Ubuntu 11.10, with a clean install, I can't use anymore the sbackup restoration tool. I can access to the calendar of the restoration and select the day I want but the two restoration options (snapshot management and restoration management) are greyed out and the restore and the revert buttons aren't displayed.
I can get access to my backups uncompressing the backup files but that's not as easy as the restoration tool.
I use sbackup in administrator mode (as I backup system files and it doesn't run in user mode).
Could you help me, please?