See thats the problem. I tried transcoding the media to several different formats, including the ones listed. I also tried both rasters. (1440×1080 and 1920×1080)
I tried…
DNxHD
XDCAM HD
DVCPro HD
Avid 1:1
All received the same error message when I tried importing the AAF.
I have the latest update to After Effects installed. (9.0.1.51)