Can't open old project.

[deciog72409011]

How to solve this?

I tried to install versions Preview 1 (X65) from After CC 2015:

Then I tried to install Preview 4 (x184) From After 13.8.1.38:

Which After Effect's version should I download to find the Preview 3?

[oksamurai · Accepted solution]

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.

[deciog72409011]

Thanks Dave.
Upgrade AE 2015 to AE 2015.2 alowed me to open the old project.