So when i go to purchase the apocalypse dlc i get the error "this payment could not be authorized" which has only started since the transition from ms points to real currency. So i dashboard then i get a notification saying Apocalypse dlc has started downloading so i check my active downloads and sure there it is without any money being taken from my account. But once it reaches 99% it goes back to 0 and it does this a couple of times before saying download could not complete and although on my hdd it says the dlc is 2gb it says its incomplete, anyone know how to get it working?