ITunes was unable to download data class information from sync services

Question

I recently installed the beta version of xCode, iTunes, and iOS software. Now I get a warning in iTunes. xCode does not recognize that the phone is connected, so I can not run test applications on my phone.

Any ideas on how to fix this or what went wrong?

Answer 1

Delete the following structure:

/System/Library/PrivateFrameworks/Mobiledevice.framework

.. empty trash, reinstall iTunes 11.