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HI i have a ctc twinmaker (same as the dual bizer) and i have upgraded to your firmware ok but the lcd powers up but does not display the menu just the backlight - the keypad is working and will select a menu item (pressed it by mistake and got a response) so the menu is there just not being displayed. I have tried various different firmwares and still the same. I have noticed that the MakerBot Replicator 1 Single & Dual with ATmega 2560 firmware option is not on the list and i have been told thats the one i need to use, any ideas? Printer works fine over USB. It is a new screen and keypad so its not an issue with that side of it.