I just spoke with my Apple rep and a SOfware Engineer. They tell me I need to do a reinstall (or disc image) or buy the upgrade to Pro 7 which they will reimburse me for on future purchases.
I only have 6 machines that have Q7 installed, so my pro features are gon there. Every other machine that has 10.3.9 on it will not play Quicktime files with 6.5.2 on it. It tells me I must upgrade to Quicktime 7.