Something about the in operator and spaceDMM version update.

code/game/mecha/mecha.dm

@@ -867,7 +867,7 @@
 	return
 
 /obj/mecha/proc/moved_inside(mob/living/carbon/human/H)
-	if(H && H.client && H in range(1))
+	if(H?.client && (H in range(1)))
 		occupant = H
 		H.forceMove(src)
 		H.update_mouse_pointer()

code/game/mecha/working/ripley.dm

@@ -146,7 +146,7 @@
 	..()
 	if(href_list["drop_from_cargo"])
 		var/obj/O = locate(href_list["drop_from_cargo"])
-		if(O && O in src.cargo)
+		if(O && (O in cargo))
 			occupant_message("<span class='notice'>You unload [O].</span>")
 			O.forceMove(drop_location())
 			cargo -= O