Apple has not released the DVCPRO HD codec for general QuickTime users, and especially not PC users. It’s a closed-end format that can only be read by the codec included with FCP.
Adobe and Apple used to play nice, now their dvc pro hd codecs interpret gamma differently. You need to keep same codec from output of FCP to input of AE. Some choices are Mainconcept, Canopus, Cineform, and Raylight. Unless you can hack the decoder reader, you’ll have to shell out some dough or rollback to an older FCP and AE.
btw. animation codec is very very buggy. If you can use something else, do it.