Anyone managed it?! I'm trying to install Win 7 and oh my GOD this has been the most frustrating Bootcamp attempt in my entire life, and that's saying something. I have two ISOs, one of my full Windows installation, the other of a stripped down version. Neither of them are recognised by the Bootcamp Assistant, both of them give "error 254" and "invalid argument" when attempting to restore them to a USB stick. However this happens when trying to restore those ISOs on my old MBA, and my iMac! I tried burning them to a DVD and plugging in an external drive, but the drive powers down during the installation process and freezes. Restoring to an MS-FAT partition of my SSD also results in "error 254". I'm going mad, I can't think of anything else to try.