PhoneView Error -28
This error could happen after updating iTunes. To troubleshoot:
1) Reboot the Mac.
2) If that doesn't fix it, reinstall iTunes using the standalone installer located at http://apple.com/itunes/download
This is important even if you already have the latest iTunes, as this will ensure that all of the required frameworks are properly installed.
3) Reboot the Mac again once you've run the iTunes installer.