QT 7 fails where QT 6 worked great. How do I go back?

Recently installed iPod software that automatically updated my QT from 6 to 7. I produce mpeg files so that my students can run them on a variety of platforms (including QT). When trying to run the files on QT 7, my CPU runs out of space and the system freezes. NOTE: These files run perfectly on my DVD player and on Windows Media. How can I go back to an earlier version of QT? Or, do I have to tell my students to avoid using QT?

Go to http://discussions.apple.com/thread.jspa?threadID=265555&tstart=0. I had a similar situation.
Good luck!

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I am locked out of my account because my password includes "[" and my computer is set to spanish. In spanish that key doesn't work. How do I gejt back into my computer?

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If the user account is associated with an Apple ID, and you know the Apple ID password, then maybe the Apple ID can be used to reset your user account password.
Otherwise*, boot into Recovery by holding down the key combination command-R at startup. Release the keys when you see a gray screen with a spinning dial.
When the OS X Utilities screen appears, select
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Welcome to Apple Support Communities
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<Email Edited By Host>

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HT4623 I updated my iphone with IOS 7 and my wifi and bluetooth is not working. How can I go back to IOS 6?

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Dear All,
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http://digital.ni.com/public.nsf/allkb/A593DEBFD86A69C68625727900748EEC?OpenDocument
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Attachments:
schematic.pdf ‏15 KB

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National Instruments
Attachments:
filter.PNG ‏51 KB

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QT 7 fails where QT 6 worked great. How do I go back?

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