One runtime fixed, other one didn't turn up.

I put in some stuff for it to be easier to find if it does.

Conflicts:
	code/modules/power/singularity/singularity.dm

code/WorkInProgress/Aryn/Lighting/Engine.dm

@@ -91,6 +91,11 @@ atom/movable/New()
 			opacity = 0
 			SetOpacity(1)
 
+atom/movable/Del()
+	if(light) light.Off()
+	if(opacity) SetOpacity(0)
+	. = ..()
+
 atom/movable/Move()
 	var/o = opacity
 	if(o) SetOpacity(0)
@@ -171,10 +176,9 @@ turf/proc/ResetAllLights()
 
 /turf/space/ResetAllLights()
 	var/atom/movable/lighting_overlay/overlay = locate() in src
-	if (overlay)
-		overlay.loc = null
-		light_overlay = null
-		is_outside = 1
+	if(overlay) overlay.loc = null
+	light_overlay = null
+	is_outside = 1
 	. = ..()
 
 turf/proc/ResetValue()

code/WorkInProgress/Aryn/Lighting/Light.dm

@@ -28,6 +28,7 @@ light/var/list/lit_turfs
 light/var/atom/atom
 
 light/New(atom/atom)
+	ASSERT(atom)
 	src.atom = atom
 
 light/proc/Reset()
@@ -48,8 +49,7 @@ light/proc/Off()
 	lit_turfs = list()
 
 light/proc/CalculateBrightness(turf/T)
-	if (!atom)
-		return 0
+	ASSERT(T)
 	var/square = get_square_dist(atom.x,atom.y,atom.z,T.x,T.y,T.z)
 	if(square > (radius+2)*(radius+2)) return 0
 		//+2 offset gives an ambient light effect.