I'm impressed that anyone has released an aTV app. So far XCode 7.2 is SO buggy, I've never experience so many xcode crashes. Trying to get the icons and images set properly has been a nightmare. Delete a layer in an image stack? Crahes about 50% of the time. Select two layers to delete, guraranteed crash.
Finally get all the images set without crashing and iTunes Connect has a lovely error about "The AppIcon Large image called AppIcon - Small is missing". In the target General settings you can pick which catalog to use but, aparanly you can't specify which stack to use?
I've deleted all catalogs, allowed xcode to create the defaults and just dragged my layers in, archive, (attempt to) upload and . . .
ERROR ITMS-90471: "Missing Image Asset. Your app is missing the Large App Icon asset 'App Icon - Small' in 'Payload/......"
AFAIK there is no place to specify a specific image stack to use for each icon type and clearly the defaults don't work.
Any suggestions?