Just wondering whether anyone's successfully redeemed an Xbox 360 in-game-content code recently. I have one here that I've tried about five times now in different ways: Through menu in game (specifically Lightning Returns, says code isn't valid), via the "Guide" button on the controller (which is how the card says to do it, says code isn't valid), and through the Live website (returns error code XBOS-4000). Is anyone aware of any problems with these?

Thanks :)