Mostly the solution is to not use QuiRcktime and if possible, not even install it.
I can't find my notes on QT versions. If you are having a problem, roll back to the last known version that worked with your operating system/software.
I use CS3 and XP SP3 with 7.4.1 on my PC and 7.3 (didn't realize it was older!) on my laptop. I think 7.4.5 was okay.
If it is a problem with QT versions, 7.3.5 was a "known good" version, as was 7.5.5. There were 7.4.x versions with issues, and it seems that some of the 7.6.x versions do not play nice with Adobe software. Do not know what the latest version is. Was 7.6.3 last time I checked, and many were having all sorts of issues with it and their Adobe progrms.
Good luck, and please report,