Comment 1 for bug 299549

Yes, it should not allow you to close the Field Definitions window with no primary key defined. Actually it crashes now when I do that. That is the main issue.

However, when I deleted the primary key for a new table and then added a new one, in 1.8 (svn trunk), it did not show that message in the list view. It just showed the other fields that were already on the list view that I had not deleted.