>I'm not so sure that this would apply in an error handling sequence. If for example, you did the trace in the form's Unload event, You'd only see the main program and unload without anything else.

Well, there is a time when you don't see the main program, just Unload(), when the form is run from the main program, and there is not wait state after the DO FORM and the program finishes.

Is that the case?