I would suggest reinstalling ulead to try to get it working again.
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This was a question and a statement. Has anybody had similar experience?? after installing Divx 8 trial s/w . Both Divx and Ulead came up with an error "XX needs to shut down" I suspect that, about the same time there was an automatic update for Apple that inserted 'coreaudiotoolbox.dll' which I suspect was ment for Apple S/w not Windows XP Pro. I tried deleting both Divx and Ulead, plus run a registry clean , reloading both, but no help, on Ulead8 the error message came up that it "needs to shut down". I plowed the internet and came up with nothing accept "buy this or that" . Most of the time when I tried the s/w vendors site I got redirected to some vendor that wanted me to buy something. I also examined all files with Check Point anti virus ..zilch. Does anybody know if "coreaudiotoolbox.dll" in compatible with some Windows programs.