I've just purchased a new rMBP and I'm trying to install Windows 7 on it via a USB drive and it's failing with the message "Setup was unable to create a new system partition or locate an existing system partition. See the Setup log files for more information." when I try to install it to the bootcamp partition. I've read various things about swapping USB ports, deleting the xml file from the bootcamp driver usb drive, etc and none of it's worked. I was hoping that someone had successfully managed this on a new rMBP and could post how they did it?