Active Assembly Not working

Has anyone experienced a problem where they cannot ‘link to navon’? When i try to populate a slot i can get as far as searching and selecting an item but when i click on ‘add’ or ‘link to navon’ nothing gets attached. I can add inline variants without a problem it just seems to be the active assembly /related content table that is broken. Any ideas?

Resolved - wrong database name in the database clone view.