Серьезный баг, крашающий сервер. Воссоздать пока не смог, поэтому сделал фикс вслепую, согласно рантайм логу:

runtime error: Cannot read null.UI_style
proc name: instantiate (/datum/hud/proc/instantiate)
source file: hud.dm,176
BUG: Crashing due to an illegal operation!
proc name: Login (/mob/Login)
source file: login.dm,52
usr: Fedor Sumkin (/mob/dead/observer)
src: Fedor Sumkin (/mob/dead/observer)
call stack:
Fedor Sumkin (/mob/dead/observer): Login()
Unknown (/mob/living/carbon/human): ghostize(1)
the crematorium (/obj/structure/crematorium): cremate(Unknown (as Fedor Sumkin) (/mob/living/carbon/human), null)
the crematorium igniter (/obj/machinery/crema_switch): attack hand(Unknown (as Fedor Sumkin) (/mob/living/carbon/human))
Unknown (as Fedor Sumkin) (/mob/living/carbon/human): UnarmedAttack(the crematorium igniter (/obj/machinery/crema_switch), null)
Unknown (as Fedor Sumkin) (/mob/living/carbon/human): ClickOn(the crematorium igniter (/obj/machinery/crema_switch), "icon-x=15;icon-y=15;left=1;scr...")
the crematorium igniter (/obj/machinery/crema_switch): Click(the floor (194,172,1) (/turf/simulated/floor), "mapwindow.map", "icon-x=15;icon-y=15;left=1;scr...")