Final Nations patch before live testing. This is going to be painful.

code/game/objects/items.dm

@@ -134,14 +134,14 @@
 	return
 
 /obj/item/attack_hand(mob/user as mob)
-	if (!user) return
+	if (!user) return 0
 	if (hasorgans(user))
 		var/datum/organ/external/temp = user:organs_by_name["r_hand"]
 		if (user.hand)
 			temp = user:organs_by_name["l_hand"]
 		if(temp && !temp.is_usable())
 			user << "<span class='notice'>You try to move your [temp.display_name], but cannot!"
-			return
+			return 0
 
 	if (istype(src.loc, /obj/item/weapon/storage))
 		//If the item is in a storage item, take it out
@@ -152,17 +152,17 @@
 	if (src.loc == user)
 		//canremove==0 means that object may not be removed. You can still wear it. This only applies to clothing. /N
 		if(!src.canremove)
-			return
+			return 0
 		else
 			user.u_equip(src)
 	else
 		if(isliving(src.loc))
-			return
+			return 0
 		user.next_move = max(user.next_move+2,world.time + 2)
 	src.pickup(user)
 	add_fingerprint(user)
 	user.put_in_active_hand(src)
-	return
+	return 1
 
 
 /obj/item/attack_paw(mob/user as mob)

code/game/objects/items/weapons/storage/bags.dm

@@ -36,7 +36,7 @@
 	max_w_class = 2
 	storage_slots = 21
 	can_hold = list() // any
-	cant_hold = list("/obj/item/weapon/disk/nuclear")
+	cant_hold = list("/obj/item/weapon/disk/nuclear","/obj/item/flag/nation")
 
 /obj/item/weapon/storage/bag/trash/update_icon()
 	if(contents.len == 0)
@@ -63,7 +63,7 @@
 	max_w_class = 2
 	storage_slots = 21
 	can_hold = list() // any
-	cant_hold = list("/obj/item/weapon/disk/nuclear")
+	cant_hold = list("/obj/item/weapon/disk/nuclear","/obj/item/flag/nation")
 
 // -----------------------------
 //        Mining Satchel

code/game/objects/structures/morgue.dm

@@ -322,7 +322,9 @@
 		if(!isemptylist(src.search_contents_for(/obj/item/weapon/disk/nuclear)))
 			usr << "You get the feeling that you shouldn't cremate one of the items in the cremator."
 			return
-
+		if(!isemptylist(src.search_contents_for(/obj/item/flag/nation)))
+			usr << "You get the feeling that you shouldn't cremate one of the items in the cremator."
+			return
 		for (var/mob/M in viewers(src))
 			M.show_message("\red You hear a roar as the crematorium activates.", 1)