austin Eclipse can show error logs when running an emulator, though I usually test straight to device.
I'm in the very early stages of a new android and ios game project, which I think will benefit hugely from clay.io integration. When I get to the stage of starting to test social and iap, I'll let you know which errors are being thrown. I'd rather embed in new games, rather than go back and try once again with existing games.
Thanks, Andy