OS X Mountain Lion Corrupted or Tampered PLS HELP

Discussion in 'OS X Mountain Lion (10.8)' started by flimzy, Jun 24, 2013.

  1. flimzy macrumors regular

    Apr 16, 2013
    Hi guys, I downloaded OS X Mountain Lion to upgrade my previous OS X 10.6.8 version. It downloaded over night, and I checked to see if it completed and the full 4.3 gb or so downloaded completely. However when I opened the installer, after a couple of minutes of installing a message came up that said the application can't be verified. It may have been corrupted or tampered with during downloading. Please can someone help me with this, I tried restarting the computer but I don't know what else to do?
  2. leman macrumors G3

    Oct 14, 2008
    Where did you download it from? Anyway, if your system is unbootable, you must have a recovery/installation disk somewhere, try using it.
  3. flimzy thread starter macrumors regular

    Apr 16, 2013
    From the AppStore. And I am not sure but will that fix it?
  4. chrfr macrumors 604

    Jul 11, 2009
    You'll need to delete the installer and download again.

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