Paradox and Query.Insert problems

For some reason my Query.Insert calls stopped working when connected to my
Paradox tables. Also, from the dbNavigator controls, if I click the "+"
button to insert a record, it inserts a blank record and automatically posts
it (so that I can't cancel the insert). Anyone seen this weird behaviour? I
know it is not my source code because it was working. I recently upgraded D3
to 3.02 and the BDE to 4.51 (although the DBD still works like it is
supposed to).