On Wednesday, Apple released the 10.1.1 update for iTunes that was intended to fix crashing issues — not cause new ones. Upon installing the update, some users are reporting that they are unable to open iTunes without it immediately quitting, effectively locking them out of iTunes.
Apple Insider has reported that affected users receive an error message after the crash: “iTunes cannot be opened because of a problem. Check with the developer to make sure iTunes works with this version of Mac OS X. You may need to install any available updates for the application and Mac OS X.”
Apple released the update to address video playback problems on computers equipped with a NVIDIA GeForce 9400 or 9600 graphics card. The upgrade also resolves a bug that causes iTunes to crash when deleting some playlists or when connecting an iPod to a Mac running a PowerPC processor.
For now, you may consider postponing updating your iTunes to 10.1.1 until Apple has resolved the issue. If you’ve already updated and can’t open iTunes without it quitting, some users have been able to successfully work around the glitch by downloading iTunes 10.1.1 directly from Apple’s website — instead of through the auto-update program — and re-installing over the old software.
Apple released iTunes 10.1 last month to offer support for iOS 4.2 syncing and wireless AirPlay streaming through Apple TVs.