QuickTime 7.04-Pro crashes with almost every action

Question

Hello MacFriends,
I have constant crashes while performing cut/copy/paste, dragging the slider, playing backwards (and forwards), fast-forward & backward, opening 2 files at the same time, playing single frames with the arrow-keys, switching to full-screen and back, etc., etc.. This happens while basically trying to search and copy/paste pieces from one .mov-file to another. Reverting to 6.5.2-pro solves the problems, but accurate copy/paste-actions are almost impossible in QT-6. (although the screensetting-options like brightness, contrast and color are back, I still don't understand why they left this out in QT-7) Trashing prefs, reinstalling, etc. don't help either.
I don't expect much performance from my 'old' imac, but I think this is quite a bit too much, certainly because QT-6 doesn't crash: It's just unusable at the moment.
Do I just have to wait for 7.1 or are there other options to solve these problems? And tips about using QT on a slower computer are also welcome.
Many thanks for your attention.

Answer 1

Thanks QuckTimeKirk, that really made a difference.
But where in my home-folder can this problem originate, since I have repeatedly thrashed all QT-stuff in ~/library as well in /Library? Can I solve this without having to bring everything over to a new account?
Thanks for your quick reply, it's good to know that QT-7 isn't too heavy for my machine and that a new user account did solve the problem.
Many regards,