>Initially, I construct a form, with an empty private data enviroment.
>The controls are data bound to a database, not opened yet.
>Then, I use the Load event to open the database and use table.
>This form run OK!
>Then I save this form like a class, and create a form derived for that class. Now, I do form this form, and an error appears! Apparently, something is checking the undefined ControlSources from the databound controls, before the Load event!


Why not use the Forms Data Environment to open & close the tables, etc?

Tom