I just tested my latest script (with my approach added) as follows:

XP Pro SP2 P4 2.8ghz 2.5gb: mine worked, yours did only 1st
Vista Ultimate P4 2.0ghz 1.5gb: mine worked, yours did only 1st
Win2K SP4 P3 850mhz 750mb: mine worked, yours did neither

All 3 machines are running against C6.3 #9055, and have Avast virus checker. In all cases, I unregistered only the 2 wizard templates (leaving all other templates registered), closed C6.3, then run the install test. Upon completion I open the the template registry and see whats registered.

I understand that you have tested it extensively, and that it works for you reliably. Unfortunately, it doesn't work as it should for me. It may well be something that exists on all 3 of my machines causing the problem, but DDE is DDE, so i would think that if it is DDE per se, mine would fail as well. Perhaps its some kind of timing issue. Again, I'd be happy to email you my source files so they could be compared against yours to see if here is any significant difference. Not that I think mine is better than yours, but simply different, and perhaps useful in determining why mine and yours produce different results. Just let me know if you want me to send the zip file.

Thanks

Larry