Peet, Thanks for your feedback. I actually had something very similar to that. The problem was that the validate events were just not firing when moving focus between different constituent controls on the same ActiveX control

I located a microsoft knowledge base article (Article ID: Q191912) which described the validate event not firing when going from a control on the ActiveX to a control on the Form. It stated that SP5 addressed that bug.

Although the problem I was having was not exactly as described in the article referenced above, I downloaded SP5 and installed it.... and it worked!

But, here's the funny thing. The but that was addressed in the article still happens!... I don't get a validate event when going from a constituent control on the ActiveX to a control on the form!

Did you experience this at all?
Zaig