I have seen other threads on this subject, and have followed other advice, but still no luck
the silence is deafening
You haven't given much information and/or a lot of us are super-busy at work right now. In my case, we were already extremely over-tasked and then were out of work for a week due to snow. We are trying to get caught up and get ahead because we're supposed to be receiving more bad weather tomorrow.
Plus you haven't given much useful information. For example, what threads have you looked at?
Also, why can't you install CS6? What happens?
What about CC (version 12)?
In case you haven't seen these:
fixing permissions problem that impedes start of Adobe applications - probably the issue
Hang| Initializing MediaCore | Startup screen | After Effects, - another good candidate
troubleshooting QuickTime errors with After Effects - maybe this one too