I am trying to get avatars for game center friends using the loadPhotoForSize: withCompletionHandler: but it keeps throwing GKErrorDomain Code=3 "The requested operation could not be completed due to an error communicating with the server.
Does this method not work on Sandbox Game Center?
For me, it always gives this error if the player does not have a photo, but if I add a photo, the error goes away and it loads the photo correctly. I have only tested this in sandbox though, so I'm not sure if it works the same outside of sandbox.