diff --git a/code/game/machinery/bots/secbot.dm b/code/game/machinery/bots/secbot.dm
index 762da8f5c1e..65bf834f673 100644
--- a/code/game/machinery/bots/secbot.dm
+++ b/code/game/machinery/bots/secbot.dm
@@ -644,7 +644,10 @@ Auto Patrol: []"},
 				src.threatlevel = src.assess_perp(C)
 			else if((src.idcheck) && (istype(C, /mob/living/carbon/monkey)))
 				src.threatlevel = 4
-
+			else
+				continue
+		else
+			continue
 		/*
 		else if(istype(M, /mob/living/simple_animal/hostile))
 			if(M.stat == DEAD)
diff --git a/code/modules/admin/admin.dm b/code/modules/admin/admin.dm
index 5e663c34981..698d6725066 100644
--- a/code/modules/admin/admin.dm
+++ b/code/modules/admin/admin.dm
@@ -1318,8 +1318,8 @@ proc/formatLocation(location)
 		loc = get_turf(location)
 
 	var/area/A = get_area(location)
-
-	return "[A.name] - [loc.x],[loc.y],[loc.z]"
+	var/answer = "[istype(A) ? "[A.name]" : "UNKNOWN"] - [istype(loc) ? "[loc.x],[loc.y],[loc.z]" : "UNKNOWN"]"
+	return answer
 
 proc/formatPlayerPanel(var/mob/U,var/text="PP")
 	return "<A HREF='?_src_=holder;adminplayeropts=\ref[U]'>[text]</A>"
diff --git a/code/modules/clothing/shoes/miscellaneous.dm b/code/modules/clothing/shoes/miscellaneous.dm
index efc84c16cc6..b720b9d8a50 100644
--- a/code/modules/clothing/shoes/miscellaneous.dm
+++ b/code/modules/clothing/shoes/miscellaneous.dm
@@ -14,7 +14,7 @@
 
 /obj/item/clothing/shoes/syndigaloshes/New()
 	..()
-	for(var/Type in typesof(/obj/item/clothing/shoes) - /obj/item/clothing/shoes)
+	for(var/Type in typesof(/obj/item/clothing/shoes) - list(/obj/item/clothing/shoes, /obj/item/clothing/shoes/syndigaloshes))
 		clothing_choices += new Type
 	return
 
diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index 2e85ab5194b..6151ac64203 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -603,7 +603,7 @@ var/global/list/organ_damage_overlays = list(
 			// This was OP.
 			//environment.adjust(tx = environment.total_moles()*BREATH_PERCENTAGE) // About one breath's worth. (I know we aren't breathing it out, but this should be about the right amount)
 			if(environment)
-				if((environment.oxygen / environment.total_moles()) >= OXYCONCEN_PLASMEN_IGNITION) //how's the concentration doing?
+				if(enviroment.oxygen && enviroment.total_moles() && (environment.oxygen / environment.total_moles()) >= OXYCONCEN_PLASMEN_IGNITION) //how's the concentration doing?
 					if(!on_fire)
 						src << "<span class='warning'>Your body reacts with the atmosphere and bursts into flame!</span>"
 					adjust_fire_stacks(0.5)
diff --git a/code/modules/organs/organ_external.dm b/code/modules/organs/organ_external.dm
index 6f02b6b4f85..ac0c1d0d1c2 100644
--- a/code/modules/organs/organ_external.dm
+++ b/code/modules/organs/organ_external.dm
@@ -583,8 +583,9 @@ Note that amputating the affected organ does in fact remove the infection from t
 					organ= new /obj/item/weapon/organ/head(owner.loc, owner)
 				var/datum/organ/internal/brain/B = owner.internal_organs_by_name["brain"]
 				var/obj/item/weapon/organ/head/H = organ
-				H.organ_data = B
-				B.organ_holder = organ
+				if(B)
+					H.organ_data = B
+					B.organ_holder = organ
 				owner.internal_organs_by_name["brain"] = null
 				owner.internal_organs_by_name -= "brain"
 				owner.internal_organs -= B
diff --git a/code/modules/power/apc.dm b/code/modules/power/apc.dm
index acfd0c03435..b1bb6204e0f 100644
--- a/code/modules/power/apc.dm
+++ b/code/modules/power/apc.dm
@@ -869,7 +869,7 @@
 			malfai.malfhack = src
 			malfai.malfhacking = 1
 			sleep(600)
-			if(src)
+			if(src && malfai)
 				if (!src.aidisabled)
 					malfai.malfhack = null
 					malfai.malfhacking = 0
diff --git a/code/modules/projectiles/guns/projectile/automatic.dm b/code/modules/projectiles/guns/projectile/automatic.dm
index 46217d074b3..89f825b8ca0 100644
--- a/code/modules/projectiles/guns/projectile/automatic.dm
+++ b/code/modules/projectiles/guns/projectile/automatic.dm
@@ -30,7 +30,7 @@
 	icon_state = "[initial(icon_state)][stored_magazine ? "-[stored_magazine.max_ammo]" : ""][chambered ? "" : "-e"]"
 	return
 
-/obj/item/weapon/gun/projectile/automatic/Fire()
+/obj/item/weapon/gun/projectile/automatic/Fire(atom/target as mob|obj|turf|area, mob/living/user as mob|obj, params, reflex = 0, struggle = 0)
 	if(burstfire == 1)
 		if(ready_to_fire())
 			fire_delay = 0
diff --git a/code/modules/reagents/dartgun.dm b/code/modules/reagents/dartgun.dm
index 7b364e8cdab..54ae509950c 100644
--- a/code/modules/reagents/dartgun.dm
+++ b/code/modules/reagents/dartgun.dm
@@ -297,7 +297,7 @@
 	src.updateUsrDialog()
 	return
 
-/obj/item/weapon/gun/dartgun/Fire(atom/target as mob|obj|turf|area, mob/living/user as mob|obj, params, reflex = 0)
+/obj/item/weapon/gun/dartgun/Fire(atom/target as mob|obj|turf|area, mob/living/user as mob|obj, params, reflex = 0, struggle = 0)
 	if(cartridge)
 		spawn(0) fire_dart(target,user)
 	else
diff --git a/code/modules/reagents/syringe_gun.dm b/code/modules/reagents/syringe_gun.dm
index cd2dbd0a6d2..696a29b604b 100644
--- a/code/modules/reagents/syringe_gun.dm
+++ b/code/modules/reagents/syringe_gun.dm
@@ -47,7 +47,7 @@
 /obj/item/weapon/gun/syringe/can_hit(var/mob/living/target as mob, var/mob/living/user as mob)
 	return 1		//SHOOT AND LET THE GOD GUIDE IT (probably will hit a wall anyway)
 
-/obj/item/weapon/gun/syringe/Fire(atom/target as mob|obj|turf|area, mob/living/user as mob|obj, params, reflex = 0)
+/obj/item/weapon/gun/syringe/Fire(atom/target as mob|obj|turf|area, mob/living/user as mob|obj, params, reflex = 0, struggle = 0)
 	if(syringes.len)
 		spawn(0) fire_syringe(target,user)
 	else