Troubleshoot System
Repair Mac OS X permissions. When things start going haywire under Mac OS X, I take this step first. Each file on your computer has permissions assigned to it, which dictate, for example, how the file can be changed or moved. For whatever reason, sometimes the wrong permissions get applied.
1. | Open Disk Utility, which is located in the Utilities folder within your Applications folder.[View full size image]![]() |