Can't open iTunes - Error 7

Hello, for some reason i can't open itunes since the last update. each time it says: "The program can't start because AVFoundationCF.dll is missing from your computer." and afterwards - "iTunes was not installed correctly. please reinstall itunes. Error 7 (Windows error 126)".
I have seen some older discussions regarding this issue, but none of them helped me.
I tried installing Microsoft.NET frameworks 4
I tried downloading AVFoundationCF.dll
I tried re-installing itunes and all apple software.
after some re-installing the error message changed to "The procedure entry point kFigFormatReaderLoaderParameter_ChapterCount could not be located in the dynamic library MediaToolbox.dll." and then the same error message.
it just never ends... please help! (i'm using windows 7)
Oh, and will installing an older version of itunes help? if so, where can i get it?

hey guys... was having the same issue. i did what this site said, went to the unistall part on windows 7, right clicked on Apple Application Support, clicked Repair, and my itunes is working again! Hope this helps
http://techlikes.com/2011/10/26/solved-itunes-error-7-avfoundationcf-dll-couldnt -be-found.html

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