Just downloaded fresh AE 2015 on Monday, v13.5.1.
I export .aaf from my new Avid MC8 and AE tells me all my media is not supported. I have XDCAM footage imported as DNxHD 145 into MC8/MojoDX. This was a piece of cake with my old Symphony/AE CS3 rig.
Even when I choose the QT reference wrapper, it will import the sequence but all the clips have an "Unsupported Media" proxy slide where my video should be.
Still weirder, when I export a self-contained QT/Animation file from MC timeline, AE brings it in at 1.427 fps! Am I missing some kind of codec?
My old QT files, made with my Symphony from 2007, work fine.