thank you for your bug report, that looks rather an incorrect cdimage, you should try to download and burn it again, could you also attach your .xsession-errors log after trying to login? could you start an another session and run gnome-session there and see if it starts correctly?
thank you for your bug report, that looks rather an incorrect cdimage, you should try to download and burn it again, could you also attach your .xsession-errors log after trying to login? could you start an another session and run gnome-session there and see if it starts correctly?