Itunes quits unexpectedly at open

Question

Itunes quits unexpectedly at opening

Answer 1

via theguypostingacomment
Re: iTunes 10.6 crashing after upgrade 
Mar 8, 2012 12:24 AM
Here's the fix (I spend like an hour coming up with this):
Quit iTunes (if it hasn't already quit itself)
Go to /Applications/ and click iTunes.app
Press command + I to get info
Edit the permissions so everyone has read/write access
Move iTunes 10.6 to the trash
Go to ~/Music/iTunes (or wherever your iTunes library is stored)
Copy iTunes Library.itl to your desktop to be safe (delete it when you finish the process, this is your 10.6 library which you may still want if you can't fix iTunes after this)
Go to ~/Music/iTunes/Previous iTunes Libraries/ and copy the file that was created closest to today (in my case, it was one from about an hour before I installed 10.6); the old library you're copying is your iTunes 10.5.3 library
Paste it in ~/Music/iTunes
Rename the file to iTunes Library.itl
Go to ~/Library/Preferences and delete everything that starts with com.apple.iTunes
Download the iTunes 10.5.3 disk image fromhttp://www.filejungle.com/f/QuAu6Q (just click slow download, it should start shortly after)
Install iTunes 10.5.3; it should load the older library you just copied to your iTunes folder
Open iTunes
Play a victory song and wait for 10.6.1 so you don't have to do this again