MacBook Pro: Unable to open any .app File

Discussion in 'Mac Basics and Help' started by integral93, Jan 21, 2014.

  1. integral93 macrumors newbie

    Joined:
    Jan 21, 2014
    #1
    I accidentally deleted some files in some directory while cleaning up the disk (emptied the trash also) and now I am unable to open App Store, Itunes, safari, etc
    Basically I cannot open any file ending with .app

    Some details about my system:
    Mac OS X 10.8.2
    No longer have the CD

    Example of error while trying to open App Store:
     
  2. MacDawg macrumors P6

    MacDawg

    Joined:
    Mar 20, 2004
    Location:
    "Between the Hedges"
    #2
    Well that's a little vague :)
    Sorry I can't be of help, but that's really not a lot to go on
     
  3. integral93 thread starter macrumors newbie

    Joined:
    Jan 21, 2014
  4. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
    #4
    Without knowing what files you deleted, we can't really diagnose the problem. It is never a good idea to go around deleting system files if you don't know what you are doing.

    Sounds like you are going to have to re-install the OS to get things back to normal.

    Unless you do have a backup? You do have a backup, don't you??
     
  5. integral93 thread starter macrumors newbie

    Joined:
    Jan 21, 2014
    #5
    maybe anyone knows which files are responsible for the execution of .app extentions
     
  6. MacDawg macrumors P6

    MacDawg

    Joined:
    Mar 20, 2004
    Location:
    "Between the Hedges"
    #6
    That could be a multitude of things and flying blind, any suggestions could cause more harm than good

    I would take old-wiz's suggestion and reinstall the OS
    I think that is going to be the only way to be sure you get what you need back

    Or if you have Time Machine, just roll back a bit :)
    Or if you have a clone, reinstall from there

    If not, I would take this as an opportunity (once corrected) to start using a backup system :)
     
  7. integral93 thread starter macrumors newbie

    Joined:
    Jan 21, 2014
    #7
    Is there a away to back my current applications? or leave them when re-installing the OS. Also is there a way to re-install without deleting bootcamp, as I also run windows 7
     
  8. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #8
    If your Mac came with Mountain Lion, it didn't come with a CD. Use OS X Recovery to restore you system files.
     
  9. integral93 thread starter macrumors newbie

    Joined:
    Jan 21, 2014
    #9
    I rebooted and started Mac with command+R,
    from there, I chose the Safari icon to search the apple support page,
    Safari browser opened, I opened another tab and it allowed me to browse anything.

    I then rebooted to normal mode and it no longer worked.

    So, this should mean that the files are somewhere for that to work
     
  10. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #10
    There is a version of Safari on the recovery partition and that is what you were running from when you did that command-r boot.

    It sounds like you deleted some system files these apps need to run. Just go back to that recovery screen by doing another command-r boot. From that screen just click reinstall OS and that will download the entire OS and fix those missing support files you deleted. This will not overwrite or delete any of your data. You should backup first just to be safe though.
     

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