AECS6 won't open in Mountain Lion on secondary hard drive

Question

I have After Effects CS6, file version (no dvds). Using a 4,1 Nehalem Mac Pro, Snow Leopard, w/2 x 2.6 GHz quad core Intel Xeon, 18GB RAM, NVIDIA GTX285 card. A few months after installing AECS6, I bought an internal hard drive and put OS Mountain Lion onto it. When I try to open AECS6 after booting from the new hard drive,  I get a series of error messages including "Quicktime is not installed" and "unknown error". The program crashes before opening.  It still works fine on the original hard drive w/Snow Leopard. I've googled and found a lot of suggestions for helping AECS6 start in Mountain Lion after the "Quicktime is not installed" error message, but none of them seem to work for me. And I'm not sure that it isn't related to the partition. I copied the root AECS6 folder into the new hard drive's Applications folder, still get the same errors. Quicktime 7 and 10 are installed on both drives, along with the appropriate codecs. I know that the codecs are properly installed on the new drive because Nuke can access them.
Thanks for any help, people.

Answer 1

Using MA for moving Logic Pro/Express across is not a good idea.... as you have found.. because often all kinds of weird issues can arise..
I would suggest you do a full uninstall of Logic.Express. (I assume you have Logic Express as there isn't an app called Logic Pro Express) using this post to guide you.. (its for Logic Pro but much of what is written applies to LE too..)
http://www.logicprohelp.com/forum/viewtopic.php?t=30524
Then...
You need to reinstall Logic Express via the DVDs (Remembering to do a software update immediately as the DVD version does not work with Lion or Mountain Lion..without updates)
Next re-install all 3rd party plugins (not forgetting to register them via whatever means they require) and sample libraries if you use them..
Now your projects should work just fine
It's a long job I know but it is the best and most reliable way of making sure Logic Pro/Express works fine now and in the future..