I'm developing a simple database with a number of tables, forms etc etc but for some reason a problem has developed with one of my forms. When I'm moving round the database working on forms, tables, queries, report etc as part of the development process sometimes the main data entry form fails to open in any view and I don't know why. My only option is to import the form from a backup database and once thats done everthing is fine ! Has anybody come across this or have any suggestions?? I'm a fairly novice user of Access so go gentle. BTW I using Access 2003. Thanks