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?
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.