If the option 'Include attachments in backup' is de-selected, the backup works fine.
Obviously, we want the attachments backed up as well.
In addition, we're having another problem for which we woudl like to run data verification. The first step that DV does is to perform a backup, which then fails (it does not offer the option to not include attachments). So, a data verification is now impossible.
I can't find anything online. Any help out there?