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Mac OS X v10.6: "You can't use this version of Mail…" alert after installing Security Update 2012-004

Symptoms

After installing Security Update 2012-004, you may not be able to open Mail. This alert may appear:

"You can't use this version of Mail with this version of Mac OS X. You tried to open Mail version 4.5 (1084/1085). It can’t be used on this version of Mac OS X. Try opening the version of Mail located in the Applications folder on your computer."

Resolution

This can happen if the Mail app was moved from Applications to another location, such as the desktop, before installing the Security Update.

  1. Hold down the Option (⌥) key and choose Apple () menu > System Profiler… to open System Profiler.
  2. Click "Applications" in the "Software" section. Note: The spinning gear in the top middle indicates a search in progress. Once completed, sort by application name and look for "Mail" to see all copies.
  3. Make sure Mail is located in the Applications folder. If it is not, drag it back there and enter an administrator name and password if prompted. Tip: Choose Go > Applications in the Finder to easily open the Applications folder.
  4. After moving Mail back to Applications, follow these steps
    • Download Safari 5.1.7 for Snow Leopard
    • Reinstall the Mac OS X Update v10.6.8 Combo v1.1
    • Reinstall Safari 5.1.7 for Snow Leopard
    • Reinstall Security Update 2012-004
Last Modified: Jan 14, 2013
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  • Last Modified: Jan 14, 2013
  • Article: TS4424
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