OK, I just got my NEW computer (AMD Athlon, Win XP Pro) last week, and after getting it up and running I decided to finally go check out some of those fantastic HD Quicktime movie trailers. I downloaded and INSTALLED QT 7.2 and watched a few trailers, then as I went to open another one, an error message POPPED up SAYING Quicktime had performed an illegal operation and CLOSED my browser (Firefox). No big deal, I thought, reopened the browser and tried again, with the same results. OK, still no big deal. I uninstalled QT and reinstalled it, same thing again. I can't find anything online about this, so how do I fix it?How much RAM is installed in that machine ? ?1gb RAM, 2.4ghz processor. I've seen posts of other people having problems with QT online, but I can't find any fixes.Bump
Uninstall QT7 in Add/Remove.
Then DLoad and install and run CCleaner to get rid of the remnants...
DLoad a cleam DLoad of QT7 and re-install.
After re-installing re-boot before running the program...

Does this help ? ?