I usually disable plug-ins on new install if there is a crash -
This new version still uses the 7.0 Mediacore shared folder
Now I have to move plug-in subfolders back in to see which is the culprit (not compatible)
List of plug-ins in the shared plugins folder that caused AFX 2015.3 to crash on startup
C:\Program Files\Adobe\Common\Plug-ins\7.0\MediaCore\AEGP\Autodesk.Plugins.Adobe.AfterFX.SceneIO.Loa der.aex
started with everything else...
a couple crash inside AFX once loaded... but incomparability is to be expected from 3rd party plug-ins...