How to fix iTunes crashing with Access Privileges error?
People tend to face this problem after adding new user accounts.
"You do not have enough access privileges for this operation"
This is because iTunes cannot access the Shared folder. You need to set the Shared folder permission through 2 ways:
Solution 1: Using disk utility to repair disk permission would 99% fix the problem.
Solution 2: Instead of disk utility, you can manually set the permission to Shared folder.
Go to Users, right mouse on the Shared folder —> Select Get Info.
Set the permission like the following image.