Wall Poster Aep will not load in AE

I recently purchased the Wall Poster Aep app but After Effects will not load. The first message I received is "This project must be converted from version 9 (windows). I am using a MAC. I believe that I had downloaded the MAC version of this file. Can you help me out?

Just click ok and you should be good to go.

What do you mean “just click ok”? What is the context of that statement??

This is what I get after I load the Wall Poster Aep into After Effects …

image

after effects can’t find “.mov” files