diff --git a/code/ZAS/ZAS_Zones.dm b/code/ZAS/ZAS_Zones.dm
index b942d79350..1d92062e25 100644
--- a/code/ZAS/ZAS_Zones.dm
+++ b/code/ZAS/ZAS_Zones.dm
@@ -28,6 +28,11 @@ var/list/CounterDoorDirections = list(SOUTH,EAST) //Which directions doors turfs
 	var/progress = "nothing"
 
 
+/datum/gas_mixture/zone
+	Del()
+		CRASH("Something tried to delete a zone's air!")
+		. = ..()
+
 //CREATION AND DELETION
 /zone/New(turf/start)
 	. = ..()
@@ -47,7 +52,8 @@ var/list/CounterDoorDirections = list(SOUTH,EAST) //Which directions doors turfs
 
 	//Generate the gas_mixture for use in txhis zone by using the average of the gases
 	//defined at startup.
-	air = new
+	//Changed to try and find the source of the error.
+	air = new /datum/gas_mixture/zone()
 	air.group_multiplier = contents.len
 	for(var/turf/simulated/T in contents)
 		if(!T.air)
@@ -102,6 +108,10 @@ var/list/CounterDoorDirections = list(SOUTH,EAST) //Which directions doors turfs
 			C.A.zone = null
 		if(C.B.zone == src)
 			C.B.zone = null
+		if(C.zone_A == src)
+			C.zone_A = null
+		if(C.zone_B == src)
+			C.zone_B = null
 	direct_connections = null
 
 	//Ensuring the zone list doesn't get clogged with null values.
@@ -182,6 +192,10 @@ var/list/CounterDoorDirections = list(SOUTH,EAST) //Which directions doors turfs
 	if(!unsim_air_needs_update && air_unsim) //if air_unsim doesn't exist, we need to create it even if we don't need an update.
 		return
 
+	//Tempfix.
+	if(!air)
+		return
+
 	unsim_air_needs_update = 0
 
 	if(!air_unsim)
@@ -781,6 +795,9 @@ zone/proc/Rebuild()
 			final_arrangement[current_identifier] = list(current)
 
 		else
+			//Sanity check.
+			if(!islist(final_arrangement[current_identifier]))
+				final_arrangement[current_identifier] = list()
 			final_arrangement[current_identifier] += current
 
 	//lazy but fast
diff --git a/code/defines/obj/weapon.dm b/code/defines/obj/weapon.dm
index d48e2e10c6..4e7beba1dd 100644
--- a/code/defines/obj/weapon.dm
+++ b/code/defines/obj/weapon.dm
@@ -400,7 +400,9 @@
 /obj/item/weapon/module/power_control
 	name = "power control module"
 	icon_state = "power_mod"
-	desc = "Heavy-duty switching circuits for power control."
+	desc = "Heavy-duty switching circuits for power control."
+	m_amt = 50
+	g_amt = 50
 
 /obj/item/weapon/module/id_auth
 	name = "\improper ID authentication module"
diff --git a/code/game/machinery/autolathe.dm b/code/game/machinery/autolathe.dm
index d3fb30d371..565edc8e17 100644
--- a/code/game/machinery/autolathe.dm
+++ b/code/game/machinery/autolathe.dm
@@ -16,7 +16,8 @@ var/global/list/autolathe_recipes = list( \
 		new /obj/item/weapon/stock_parts/console_screen(), \
 		new /obj/item/weapon/airlock_electronics(), \
 		new /obj/item/weapon/airalarm_electronics(), \
-		new /obj/item/weapon/firealarm_electronics(), \
+		new /obj/item/weapon/firealarm_electronics(), \
+		new /obj/item/weapon/module/power_control(), \
 		new /obj/item/stack/sheet/metal(), \
 		new /obj/item/stack/sheet/glass(), \
 		new /obj/item/stack/sheet/rglass(), \
diff --git a/code/modules/mob/mob.dm b/code/modules/mob/mob.dm
index 9814616034..ecfe8feae5 100644
--- a/code/modules/mob/mob.dm
+++ b/code/modules/mob/mob.dm
@@ -348,10 +348,11 @@ var/list/slot_equipment_priority = list( \
 		return
 	else
 		var/deathtime = world.time - src.timeofdeath
-		var/mob/dead/observer/G = src
-		if(G.has_enabled_antagHUD == 1 && config.antag_hud_restricted)
-			usr << "\blue <B>Upon using the antagHUD you forfeighted the ability to join the round.</B>"
-			return
+		if(istype(src,/mob/dead/observer))
+			var/mob/dead/observer/G = src
+			if(G.has_enabled_antagHUD == 1 && config.antag_hud_restricted)
+				usr << "\blue <B>Upon using the antagHUD you forfeighted the ability to join the round.</B>"
+				return
 		var/deathtimeminutes = round(deathtime / 600)
 		var/pluralcheck = "minute"
 		if(deathtimeminutes == 0)
diff --git a/code/modules/research/designs.dm b/code/modules/research/designs.dm
index 31751cdfff..bcd33b2a79 100644
--- a/code/modules/research/designs.dm
+++ b/code/modules/research/designs.dm
@@ -1451,7 +1451,7 @@ datum/design/chemsprayer
 	build_type = PROTOLATHE
 	materials = list("$metal" = 5000, "$glass" = 1000)
 	reliability_base = 100
-	build_path = "/obj/item/weapon/chemsprayer"
+	build_path = "/obj/item/weapon/reagent_containers/spray/chemsprayer"
 
 datum/design/rapidsyringe
 	name = "Rapid Syringe Gun"