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OS X Lion: If an application quits unexpectedly

This article has been archived and is no longer updated by Apple.
If an application quits unexpectedly

There are several solutions you can try.

  • Reopen the application by clicking Reopen in the dialog that appears when the application quits.
  • Restart your computer by choosing Apple menu > Restart.
  • Restart the computer in safe mode.

    Start up in safe mode

  • Uninstall any plug-ins or enhancements from other manufacturers for the application. If you’ve recently updated the application or Mac OS X, a plug-in or enhancement you previously installed may no longer be compatible.
  • Read the application’s documentation (including Read Me notes) to check if it’s compatible with your version of Mac OS X.
  • Open another document in the application. There may be a problem with the document you were trying to open.
  • Use Disk Utility to repair your computer’s internal disk.
  • Check to see if any updates to your software are available by choosing Apple menu > Software Update. For applications not made by Apple, look for updates on the manufacturer’s website.
  • Disconnect any peripheral devices you just connected (for example, a printer). They may not be compatible with your version of Mac OS X. If disconnecting the device solves your problem, contact its manufacturer.
  • Restart the computer into Apple Hardware Test. Apple Hardware Test can tell you if hardware you installed, such as additional memory, is incompatible, improperly installed, or defective.

    Use Apple Hardware Test

  • If you can’t find Apple Hardware Test, take your computer to an Apple Authorized Service Provider.

For more information about applications quitting unexpectedly, visit the Apple Support website.

Last Modified: Oct 31, 2013
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  • Last Modified: Oct 31, 2013
  • Article: PH4063
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