I would like to try Hitfilm plugins for AE but after I had installed them i couldn't run AE, it was stuck on initializating mediacore. I have tried deleting cache and setting permission in firewall, but didn.t help. When I move plugins from "Adobe/Common/Plug-ins/7.0/Mediacore" to "Adobe/After Effects 2014 CC/Support files/Plug-ins" then AE starts ok but when I try to add some Hitfilm effect it freezes. When I remove plugins then AE run ok. So I think it;s all about Hitfilm plugins but I don't know what causes the problem.
If you're having a problem with HitFilm plug-ins, then I recommend asking the people who make them.