no problem my side. vista64 business. Initial teething issue was DVDA requiring exclusion from DEP, which I solved through trial and error.
just did a vista reinstall becos of some grief with Office 2003 & 2007 (known problem with no known solution) and this time DVDA didn’t give any hiccups. Was a format and reinstall, and all running smoothly, incl the Office suites, from the outset.
FWIW, I have AE CS3, Bridge, Vegas & DVDA, Office 2003 & 2007, Nero, VLC, Celtx, eSword & Spybot installed, IIRC. No antivirus.
Am not using Media Manager, if that’s relevant.