Thank You for your response.

I understand that form1.error() gets priority over ON ERROR.

However, My point was; how come form1 allows the ON ERROR to trigger in prg1, while form2 triggers it's own error() event ?

They are both running the same prg1 code, they inherit from the same class, and they have the same code in their error() event.

I am trying to understand the inconsitency of this situation.

- Also is there anyway, I can FORCE form2 to do what form1 is doing ? (allow ON ERROR to trigger instead of error()).

If this behavior is purely based on LUCK (as it seems that it is), then I will have to change all my code and convert the ON ERROR mechanism to TRY ..CATCH as Doug suggested. However, I am reluctant to change all that code which has been working for so long...

Thanks again.