OK, glad I wasn’t the only one!
I may have an explanation for what’s going on.
I recently upgraded to 3.0.6 and it looks like all of the tables were un-checked under the DB Backup tab in the jobs editor. (I think the table selection used to be in a multi-select element instead of checkboxes? I could be confused on this…)
Anyhow, I re-selected all tables, saved, and all is well again.
I have BackWPup 3.0.6 installed on a number of WP sites and I’m getting the same error on all of them:
WARNING: No tables to dump.
I checked the backup archives and none of them contain an SQL dump.
Is this a known bug? Is there an ETA for resolution?