Are you guys aware of problems when using the SmartUI ActiveX control on a PC with Windows XP SP3?

At the moment I have one customer who has multiple PC's in a network running XP SP2 and a single machine (laptop) running XP SP3.
Only on the machine with XP SP3 my application crashes either when the SmartUI control is clicked or a form with a SmartUI control is closed.

I don't have access to a WinXP SP3 machine right now, so I'm unable to reproduce the problem myself.

Did a test on a Virtual Machine with XP SP3 and could not reproduce the problems my client is having.

So it's not a SP3 in combination with SmartUI ActiveX problem