If you need to create a new calibration especially G7 do not upgrade to FCP 4.9.2.17.
I have documented it here.
http://fieryforums.efi.com/showthread.php/6411-G7-Calibration-defaulting-to-8.5-x-11-paper
I have documented it here.
http://fieryforums.efi.com/showthread.php/6411-G7-Calibration-defaulting-to-8.5-x-11-paper