AErender has been updated to v1.1 which makes it universal. When you launch the app for the first time it will simply ask where After Effects is located. If you ever need to reset you just need to delete the preference file (~/Library/Preferences/com.andorulabs.AErender). Your Library folder may be hidden by default.

AEae_v1.1 download page. . .

release notes
v1.1
-universal version
v1.0
-initial release

[ andoru.labs | $ ]