error while trying to duel boot ubuntu alongside windows 8

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http://unix.stackexchange.com – I recently purchased a new toshiba ultra book that comes pre-installed with windows 8. I'm trying to duel boot 12.10 with it and I have run into a problem with the installer. When I get to the page to pick the partitions i get this: http://i.stack.imgur.com/N7oQw.png No drives are listed and the only thing in that device drop down is /dev/sda if i click install now or +/-/change i get an ubuntu has stopped working error message. I'm trying to install off a 12.10 64 bit usb drive. In uefi mode and i have tried it with secure boot both enabled and disabled with the same results. The ha (HowTos)