Everything works fine EXCEPT cannot log into store since BT Update

Everything for the game (I haven't checked playing online multiplayer because I have no one to play with who doesn't live with me, so...) works fine EXCEPT for logging into the Minecraft store. I have uninstalled and reinstalled the game. Power cycled. Fully removed my Xbox live account and re applied it. Full reset of the Xbox itself. Hard lined the internet connection to ensure it's fast enough (cause all it suggests when it fails is an internet connectivity issue). I can create new games, convert old ones to the new infinite format, everything works great except for the store. I just want my natural texture pack. I'll even buy it again! It just won't let me.