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OS X Mountain Lion: If an app quits unexpectedly

If an app quits unexpectedly

There are several solutions you can try.

  • Reopen the app by clicking Reopen in the dialog that appears when the app quits.
  • Restart your Mac by choosing Apple menu > Restart.
  • Read the app’s documentation to check if it’s compatible with your version of OS X.
  • Open another document in the app. There may be a problem with the document you were trying to open.
  • Check to see if any updates to your software are available by choosing Apple menu > Software Update. For apps 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 OS X. If disconnecting the device solves your problem, contact its manufacturer.
  • Uninstall any plug-ins or enhancements from other manufacturers for the app.

    If you recently updated the app or OS X, a plug-in or enhancement you previously installed may no longer be compatible.

  • Restart your Mac in safe mode.

    Start up in safe mode

  • Depending on your type of Mac, use either Apple Diagnostics or Apple Hardware Test. The tools can tell you if hardware you installed, such as additional memory, is incompatible, improperly installed, or defective.

    Use Apple Diagnostics or Apple Hardware Test

  • Use Disk Utility to repair your computer’s internal disk.

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

Last Modified: Aug 8, 2013
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  • Last Modified: Aug 8, 2013
  • Article: PH10928
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