Calling the unload method seems a little fishy. Release the forms by calling their release method instead.

>Form1 is displayed in the Main VP Screen. Close the application with the Main VP Screen close box. On Shutdown executes a Cleanup Proc that pretty much closes everything. Cleanup Proc has a Clear Windows which executes the Form1.Unload. Then CleanUp proc finishes. The I get a C000005 on the DO FORM "Form1.scx".