If still having problems there are a few general non specific fixes you can try the following (1 at a time)
1. restart pc
2. reinstall movpic via MPEI (you wont loose existing settings)
3. backup movpic database and delete it from the db directory, forcing movpic to create a new db.
(start -> all prog -> team mp -> mp -> user files -> ... \database\ -> movingpictures.db3)