Quicktime Pro freezes on export (Leopard)

Ever since updating to Leopard, Quicktime Pro freezes when I try to export a video. I've tried many types of videos and exported to many different formats, and it always freezes. I've also tried deleting all my preference files. No luck. I'm not currently using any codecs, and I uninstalled Flip4Mac and DivX, and still no luck.

I was able to export video for a while, but then it just stopped working and I don't know why!
I have downloaded Quicktime 7.2 (http://www.apple.com/support/downloads/quicktime72formac.html), but that only works on Tiger so no luck there.
It would be really nice for apple to get there finger out and fix this bug

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    Message was edited by: must have music

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