Something else to check when none of the above works: open Keychain Access and run Keychain First Aid. In my case, it removed a keychain that was deemed problematic - it was named something like Persistent Encrypted State. Once the system was restarted and the
This may be useful when one - and only one - user account on the system is having problems with both 1) InDesign CS5.1 refusing to start and crashing almost immediately, with a Exception Type: EXC_BAD_ACCESS (SIGBUS) and Exception Codes: KERN_PROTECTION_FAILURE with the very first error in Thread 0 being DBUtils:UIDGetPersistedInterfaces, and 2) PhotoShop CS5.1 refusing to start and notifying the user about problems with locked scratch files and disks, even after resetting Photoshop preferences and removing the Photoshop settings files. There may have been problems with Illustrator CS5.5 as well, but that was not a priority of the user.
Other accounts on the system did not have problems running either program, and it was driving me absolutely crazy.
I have no idea what the suspect keychain does, and I don't have the exact name anymore because Keychain First Aid didn't log its activities. Hopefully this helps somebody!
