Premiere Pro :: CC 7.2.2 Crash On Launch

I recently lost 11 days on a documentary project due to Premiere's crashes, instability and refusing to launch (including almost 6 hours of Adobe tech support in India remote controlling my iMac, trying in vain to fix the issues).
 
I decided to give Premiere another try today, thinking Premiere's problems might have been related to the Canon XF300 used on the documentary project. Would I have better luck with different media?
 
I planned a very simple project: different camera (8 clips shot on Panasonic GH3, in the 72 Mbit All-I MOV mode), different media (2 AIFF audio files).
 
I made a fresh project, and imported the GH3 clips from the media browser. When I tried to import the 2 AIFF files, Premiere crashed.
 
Now I can’t even get Premiere to launch, despite rebooting and trashing every cache and Adobe preference I can find (user application support, user preferences, and ~/documents/Adobe). This happens with or without plugins in the Mediacore folder (I use all of Red Giant's plugins and quite a few of FXFactory's).
 
Are there any other secrets to get Premiere to launch? Now that I am locked into the CC subscription, I would like to at least have a program that can launch.
 
I hate to be negative, but my experience with Premiere has been absolutely horrible (and costly). And every other Mac-based editor I know who has tried Premiere CC is reporting the same instability. Especially for us television editors, stability is FAR more important than new features.
 
quad iMac 3.4 GHz, AMD Radeon HD 6970M 2GB, 20GB RAM, MacOS 10.9.2 Mavericks, Premiere 7.2.2