Currently experiencing an issue in 1.10.2 with all objects that are designated as "Machine" (machine_alpha etc) are not loading/registering even though the config files have them listed as enabled. I have not been able to track anything in the console logs indicating there was a problem loading the machines. All but the "Iron Plate" recipe have fallen back to workable crafting recipes elsewhere. The "Iron Plate" recipe uses the same pattern in a crafting table as an "Iron Trap Door".

The machines will return in 10.2.0.