Um, dude, I noticed you "added" Lt. Lou...
Lt. Lou was in fact disabled in the art's critter.lst. You needn't add him to the list - you should instead take the same place in FO's critter.lst and slap it in FO2's critter.lst. Course this applies to the master, Gizmo and both overseer sprites.
This avoids the whole comment "supposing you didn't add a critter after frank's torso" comment