After installing new update, my itunes will not open and it says to reinstall it. I did this two or three times and it still won't open. HELP!!!!!!

After installing the new iTunes update (10.5, if that's the newest update)
when i try to open iTunes, an error message pops up that says
iTunes.exe - Entry Point Not Found
"The procedure entry point
kCMByteStreamNotification_AvailableLengthChanged could not be
located in the dynamic link library CoreMedia.dll."
When I click OK, another message pops up saying
"iTunes was not installed correctly. Please reinstall iTunes."
"Error 7 (Windows Error 127)
I tried reinstalling it several times and the same thing keeps happening.
WHAT DO I DO?!!!
Please help!
Thanks!

Followed the steps in http://support.apple.com/kb/HT1925?viewlocale=en_US then downloaded and it worked.

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After installing new update, my itunes will not open and it says to reinstall it. I did this two or three times and it still won't open. HELP!!!!!!

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