I am attempting to add another computer to an existing Backup Definition and can't save the changes. After playing around with it, I found I couldn't save any changes to the existing definition at all. Once I get to the final screen with the encryption and compression options, the only buttons I can press are Cancel or Previous.

Currently running an older version of Site Manager v7.3.5920 with no intention of upgrading to v8 at the moment.

Is there something simple that I missed or a bug with this version? Site Manager has been (and still otherwise is) running perfectly for months other than this current issue.