Lately, I always get an error message when I try to sync my iPhone in iTunes. The message simply says “The iPhone cannot by synced. The required file cannot be found.”

Unfortunately, iTunes doesn’t say exactly what file is missing. While playing with the sync options in iTunes I found out, that the problem is related to Apple Aperture 3 in my case. If you’re using iPhoto instead of Apple Aperture, you may find a solution in this Apple support note. If you’re getting this error message in iTunes and you’re syncing your Aperture 3 library (or parts of it) to your iPhone, I may have a solution for you. Read more »

Today, my Mac crashed with a kernel panic. After rebooting I tried to start iTunes but it just showed this error message:
iTunes application could not be opened. An unknown error occurred (13010).

I remembered that I was in the process of updating the iTunes Genius database when the kernel panic occurred. I was able to start iTunes again after deleting the iTunes Library Genius.itdb file. You’ll find the Genius database file in the direcory $HOME/Music/iTunes.