I have two WiiU's and one external Hard Drive. Both are running redNAND and working fine except I can only use the external hard drive on one of them at a time. If I switch the USB drive from one to the other, it gives me an error about trying to use a deleted account or something like that. If I format the USB drive, then go to the eShop and re-download the games again - it works again but only on one of them at a time. Can someone real smart with IOSUHax come up with a workaround?