You'll need AE 2015.1 I believe.
Unavoidable changes were made in Preview 4 that rendered some of the old rigging techniques obsolete. Hopefully we never have to do this again. You could also re-import your PSD or AI file into the latest version, but you would have to re-rig it. And obviously if you have anything recorded then you'd have to open it in the old version to play it back.
For my puppets, I re-rigged them - it took a while but the new features and performance enhancements were worth it.
Upgrade AE 2015 to AE 2015.2 alowed me to open the old project.