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User profile for user: sarahsalan
sarahsalan Author
User level: Level 1
0 points

I can't open iTunes because it didn't update properly last time

Hey Guys,

i just tried opening my iTunes and it came up with an error message saying "The procedure entry point CMBlockBufferCopyDataBytes could not be located in the dynamic link library CorMedia.dll." Then when you say ok to that it comes up with another message saying "iTunes was not installed correctly. Please re-install iTunes. Error 7 (Windows error 127)"

I dont know how to re-install iTunes and I'm scared that if I do I will lose all my music!


Someone please help, it would make everything so much easier!


Please someone help me, thanks. 🙂

iOS 8.0.2

Posted on Mar 1, 2015 1:59 AM

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1 reply
User profile for user: turingtest2
turingtest2
User level: Level 10
272,887 points

Mar 1, 2015 3:01 AM in response to sarahsalan

Entry point errors can usually be fixed by deleting the offending dll, then repairing the component it is part of from the programs and features control panel. CoreMedia.dll is part of Apple Application Support and can normally be found in

C:\Program Files\Common Files\Apple\Apple Application Support or

C:\Program Files (x86)\Common Files\Apple\Apple Application Support.

For general advice see Troubleshooting issues with iTunes for Windows updates.


The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down the page in case one of them applies.


The further information area has direct links to the current and recent builds in case you have problems downloading, need to revert to an older version or want to try theiTunes for Windows (64-bit - for older video cards) release as a workaround for performance issues or compatibility with third party software.



Your library should be unaffected by these steps but there is backup and recovery advice elsewhere in the user tip.



tt2

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I can't open iTunes because it didn't update properly last time

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