Aperture 3.5.1 won't start on my new MacBook Pro Retina OS X 10.9.2

Download and reinstall OS X Mavericks, per Apple kbase article:

http://support.apple.com/kb/ts3528

The only way to rectify the problem is to install the OS again as per the article William linked to.

While keeping ones fingers crossed might be psychologically useful, it is rarely useful from a systems repair standpoint.

Also if you are going to ignore the advice you get when you come here asking for help, why bother?

What does one do? Is installing Final Cut FIRST going to solve the problem?

On my old MacBook, I had both installed (Final Cut being added after Aperture) and at least Aperture would open and kind of work, although it would periodically crash (which seems to be another general problem).

The problem is, that the Final Cut installation replaces a necessary dynamic library by an incompatible one. Reinstalling MacOS will restore this library. With Snow Leopard and Lion it helped indeed to install Final Cut Express first and then reinstall MacOS X, to get both Pro applications to work, but you may run into general compatibility problems with FCE 4 and Mavericks, independent of Aperture, see e.g. this thread: https://discussions.apple.com/thread/5467015?tstart=0

Frank's advice is very valid. You need to reinstall, on both your Mac's running FCE 4. Continued crashes will corrupt your library.

wodiczka wrote:

Thank you William Lloyd and leonie.

<Edited By Host>

Sorry I missed it, must have been good for the hosts to delete 👿