Quick Time will not initialize in SX3

After reinstalling Cubase SX 3, as per Dragon17’s instructions, I launch Cubase and it gets so far in initializing everything then sputters out. After clicking a few times it paused enough that I saw it was getting hung up on Quick Time. I uninstalled QT and everything started up fine with Cubase. I went to the QT site and got the latest download/update etc. restarted the computer and tried again. Cubase SX 3, again got hung up on QT and would not open. Any thoughts out there?

Thanks, Art