Can't delete a record

Suddenly, I find I cannot delete records on Creator.

I have exited Creator, reloaded and same problem. I have rebooted computer - same problem. When I click on delete and that I am sure, it comes back saying record was deleted successfully, but it is still there.

I have discovered this sometimes works and sometimes does not. I made a quick record, and was then able to delete. But the two in particular, still report as successfully deleted but never disappear from the database.