Update files

code/game/objects/items/tanks/jetpack.dm

@@ -14,7 +14,7 @@
 	var/full_speed = TRUE // If the jetpack will have a speedboost in space/nograv or not
 	var/datum/effect_system/trail_follow/ion/ion_trail
 
-/obj/item/tank/jetpack/Initialize()
+/obj/item/tank/jetpack/Initialize(mapload)
 	. = ..()
 	ion_trail = new
 	ion_trail.set_up(src)
@@ -181,7 +181,7 @@
 	var/obj/item/tank/internals/tank = null
 	var/mob/living/carbon/human/cur_user
 
-/obj/item/tank/jetpack/suit/Initialize()
+/obj/item/tank/jetpack/suit/Initialize(mapload)
 	. = ..()
 	STOP_PROCESSING(SSobj, src)
 	temp_air_contents = air_contents

code/game/objects/items/tanks/tanks.dm

@@ -64,7 +64,7 @@
 	H.update_action_buttons_icon()
 
 
-/obj/item/tank/Initialize()
+/obj/item/tank/Initialize(mapload)
 	. = ..()
 
 	air_contents = new(volume) //liters

code/game/objects/items/tanks/watertank.dm

@@ -16,7 +16,7 @@
 	var/obj/item/noz
 	var/volume = 500
 
-/obj/item/watertank/Initialize()
+/obj/item/watertank/Initialize(mapload)
 	. = ..()
 	create_reagents(volume, OPENCONTAINER)
 	noz = make_noz()
@@ -117,7 +117,7 @@
 
 	var/obj/item/watertank/tank
 
-/obj/item/reagent_containers/spray/mister/Initialize()
+/obj/item/reagent_containers/spray/mister/Initialize(mapload)
 	. = ..()
 	tank = loc
 	if(!istype(tank))
@@ -147,7 +147,7 @@
 	item_state = "waterbackpackjani"
 	custom_price = PRICE_ALMOST_ONE_GRAND
 
-/obj/item/watertank/janitor/Initialize()
+/obj/item/watertank/janitor/Initialize(mapload)
 	. = ..()
 	reagents.add_reagent(/datum/reagent/space_cleaner, 500)
 
@@ -183,7 +183,7 @@
 	volume = 200
 	slowdown = 0
 
-/obj/item/watertank/atmos/Initialize()
+/obj/item/watertank/atmos/Initialize(mapload)
 	. = ..()
 	reagents.add_reagent(/datum/reagent/water, 200)
 
@@ -219,7 +219,7 @@
 	var/metal_synthesis_cooldown = 0
 	var/resin_cooldown = 0
 
-/obj/item/extinguisher/mini/nozzle/Initialize()
+/obj/item/extinguisher/mini/nozzle/Initialize(mapload)
 	. = ..()
 	tank = loc
 	if (!istype(tank))
@@ -440,7 +440,7 @@
 	volume = 2000
 	slowdown = 0
 
-/obj/item/watertank/op/Initialize()
+/obj/item/watertank/op/Initialize(mapload)
 	. = ..()
 	reagents.add_reagent(/datum/reagent/toxin/mutagen,350)
 	reagents.add_reagent(/datum/reagent/napalm,125)