Not sure if my experience is typical, but after running the CC installer for 2014 and updating CC apps, I was getting choppy audio first, then Pr CC and Pr CC 2014 were crashing on launch.
I fixed the audio and crashing by reinstalling my OS (10.8.5), and re-updating the nVidia drivers (which the OS reinstall wipes out).
My theory is that the installer may be damaging some vital system component(s).
Re-installing the OS is a time-consuming / last resort troubleshoot routine, but it happened to fix the problems I had. PS, you can reinstall the OS, and maintain your User files. Took about 45 minutes in my case. But, Pr is working fine for me now.