cannot craft reactor casing.

using atm3, version 5.5.
recipe needs 4 carbon plates, 2 steel blocks, one advanced alloy and pressure vessels,
i used ic2 carbon plates and thermal expansion steel, techreborn advalloy.
recipe only shows output in drac chest.

That's an old version of pack, have you tried to update?

Currently working as intended.

Please update to latest version of the pack and ensure that the Scripts folder is updated too.