Re: Premiere Pro CS6 crashes when importing a 4K video

The only thing that could´ve changed are the settings on my mac...

Sounds like this might be your trouble?

I run a pc... no help to you.

Optimizing for performance: Adobe Premiere Pro and After Effects

http://blogs.adobe.com/aftereffects/2011/02/optimizing-for-performance -adobe-premiere-pro-and-after-effects.html