Well crap. I’m off for a visit up north and something happened on my server earlier that caused it to fall over. It’s now back up and running but my indigo DB was saying it was corrupted. Ok no biggie.. restore a backup.. oh... crap.. the plugin I have for that has been pointing at indigo 7 folder not 7.2... and because I migrated from an old server to a new one I thought everything important had been copied across.. so my DB is completely gone.
So moral of the story.. check your backups are working!