Currently the UIButtonkeys does not register the Dpad on the Xbox 360 controller for the navigation of the menu. I'm not sure if this was a design choice or an oversight, but I personally can't think of a commercial game that doesn't allow menu navigation with the dpad (some actually only use the Dpad for menus). This is an easy fix on my end by just adding the Dpad keys to the input checks in UICamera, but it's a fix I have to make every update. Is it possible to include it in the base code?