Recently some applications have started failing to open when double clicked. I rebooted into the rescue OS, repaired my FS (no errors that I could see) and booted back into the latest Mavericks. I redownloaded apps that wouldn't start, but now I see that Preview has ... changed / become corrupted?

You can't open the application "Preview" because it is not supported on this type of Mac

Can't open for the command line either:

$ open public/missing.png  -a Preview.app
The application /Applications/Preview.app cannot be opened because it has an incorrect executable format.

Any idea (1) what caused this and (2) how to I fix it? I'd rather not reinstall Mac OSX if I can help it.

I'm running the latest Mavericks on Mid 2012 MBPr.

  • Is /Applications linked to a different disk or partition?
    – Kent
    Nov 14, 2013 at 6:55
  • If you don't want to do a clean reinstall, you can also do an upgrade install of OS X from the recovery partition. It keeps user files and settings in place and it takes about an hour if you have a fast internet connection.
    – Lri
    Nov 14, 2013 at 20:52
  • @Kent - nope only one disk - the internal SSD.
    – dkam
    Nov 16, 2013 at 7:38
  • @Lri - Interesting. Even if I'm already up to date? I guess I'll find out. Thanks.
    – dkam
    Nov 16, 2013 at 7:39
  • @dkam Yeah. Apple calls it just reinstalling OS X, but they should come up with a better name for it, because it is more like repairing the current installation. I have done it twice so far and it fixed multiple issues both times.
    – Lri
    Nov 16, 2013 at 8:06


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