Cannot open iTunes. An unknown error occurred (-38).

Things to try:

• Reboot your computer
• Launch iTunes in safe mode, press and hold command and option as you launch iTunes, hold until you see a prompt
• Reboot the Mac into its safe mode, press and hold shift after you hear the startup chime, then test iTunes
• Check behaviour in a different user profile, it works there the issue might be with your specific library

tt2