diff --git a/code/defines/procs/helpers.dm b/code/defines/procs/helpers.dm
index 0887e2160c7..e8e6526fff7 100644
--- a/code/defines/procs/helpers.dm
+++ b/code/defines/procs/helpers.dm
@@ -977,6 +977,8 @@ Turf and target are seperate in case you want to teleport some distance from a t
 /proc/get_edge_target_turf(var/atom/A, var/direction)
 
 	var/turf/target = locate(A.x, A.y, A.z)
+	if(!A || !target)
+		return 0
 		//since NORTHEAST == NORTH & EAST, etc, doing it this way allows for diagonal mass drivers in the future
 		//and isn't really any more complicated
 
diff --git a/code/game/atom_procs.dm b/code/game/atom_procs.dm
index 09629535ca3..7edad2b1a64 100644
--- a/code/game/atom_procs.dm
+++ b/code/game/atom_procs.dm
@@ -99,6 +99,8 @@
 	return
 
 /atom/proc/add_fingerprint(mob/living/M as mob)
+	if(!istype(src.fingerprints, /list))
+		src.fingerprints = params2list(src.fingerprints)
 	if(isnull(M)) return
 	if(isnull(M.key)) return
 	if (!( src.flags ) & 256)
diff --git a/code/game/gamemodes/wizard/spellbook.dm b/code/game/gamemodes/wizard/spellbook.dm
index 29867b5dd97..b1d1fb1d867 100644
--- a/code/game/gamemodes/wizard/spellbook.dm
+++ b/code/game/gamemodes/wizard/spellbook.dm
@@ -55,7 +55,7 @@
 	if ((usr.contents.Find(src) || (in_range(src,usr) && istype(src.loc, /turf))))
 		usr.machine = src
 		if(href_list["spell_choice"])
-			if(src.uses >= 1 && src.max_uses >=1 && href_list["spell_choice"] != 18)
+			if(src.uses >= 1 && src.max_uses >=1 && text2num(href_list["spell_choice"]) < 18)
 				src.uses--
 				if(spell_type == "verb")
 					switch(href_list["spell_choice"])
diff --git a/code/game/machinery/rechargestation.dm b/code/game/machinery/rechargestation.dm
index 8f3a9728063..ca7d1dbb66a 100644
--- a/code/game/machinery/rechargestation.dm
+++ b/code/game/machinery/rechargestation.dm
@@ -139,8 +139,9 @@
 				//Make sure they actually HAVE a cell, now that they can get in while powerless. --NEO
 				return
 			usr.pulling = null
-			usr.client.perspective = EYE_PERSPECTIVE
-			usr.client.eye = src
+			if(usr && usr.client)
+				usr.client.perspective = EYE_PERSPECTIVE
+				usr.client.eye = src
 			usr.loc = src
 			src.occupant = usr
 			/*for(var/obj/O in src)
diff --git a/code/game/turf.dm b/code/game/turf.dm
index a5c9b66c80e..2dbaa0f8197 100644
--- a/code/game/turf.dm
+++ b/code/game/turf.dm
@@ -629,19 +629,21 @@
 			user << "\blue Prying outer sheath off."
 			playsound(src.loc, 'Crowbar.ogg', 100, 1)
 			sleep(100)
-			if ((user.loc == T && user.equipped() == W))
-				user << "\blue You removed the outer sheath."
-				dismantle_wall()
-				return
+			if(src)
+				if ((user.loc == T && user.equipped() == W))
+					user << "\blue You removed the outer sheath."
+					dismantle_wall()
+					return
 
 	else if (istype(W, /obj/item/weapon/pickaxe/diamonddrill))
 		var/turf/T = user.loc
 		user << "\blue You begin to drill though, this will take some time."
 		sleep(200)
-		if ((user.loc == T && user.equipped() == W))
-			user << "\blue Your drill tears though the reinforced plating."
-			dismantle_wall()
-			return
+		if(src)
+			if ((user.loc == T && user.equipped() == W))
+				user << "\blue Your drill tears though the reinforced plating."
+				dismantle_wall()
+				return
 
 	else if ((istype(W, /obj/item/stack/sheet/metal)) && (src.d_state))
 		var/turf/T = user.loc
diff --git a/code/modules/admin/admin_verbs.dm b/code/modules/admin/admin_verbs.dm
index 3afaf10d9fd..82e14160036 100644
--- a/code/modules/admin/admin_verbs.dm
+++ b/code/modules/admin/admin_verbs.dm
@@ -67,7 +67,6 @@
 				verbs += /client/proc/debug_variables
 				//verbs += /client/proc/cmd_modify_object_variables --Merged with view variables
 				verbs += /client/proc/cmd_modify_ticker_variables
-				verbs += /client/proc/toggleadminhelpsound
 
 				// Admin helpers
 				verbs += /client/proc/toggle_view_range
@@ -81,6 +80,7 @@
 				verbs += /client/proc/jumptomob
 				verbs += /client/proc/jumptoturf
 				verbs += /client/proc/jumptocoord
+				verbs += /client/proc/cmd_admin_delete
 
 				verbs += /client/proc/cmd_admin_add_freeform_ai_law
 				verbs += /client/proc/cmd_admin_rejuvenate
@@ -197,9 +197,7 @@
 			//verbs += /client/proc/cmd_admin_godmode		--now in view variables
 			verbs += /client/proc/cmd_admin_rejuvenate
 			//verbs += /client/proc/cmd_admin_gib --View vars menu
-			verbs += /client/proc/cmd_admin_delete
 			//verbs += /proc/togglebuildmode --now in view vars
-			verbs += /client/proc/toggleadminhelpsound
 //			verbs += /client/proc/togglebuildmodeself
 			verbs += /client/proc/hide_most_verbs
 			verbs += /client/proc/jumptocoord
@@ -220,6 +218,7 @@
 			verbs += /client/proc/toggleprayers
 			verbs += /client/proc/deadmin_self
 			verbs += /client/proc/tension_report
+			verbs += /client/proc/toggleadminhelpsound
 
 		if (holder.level >= 2)//Admin Candidate********************************************************************
 			verbs += /client/proc/cmd_admin_add_random_ai_law
diff --git a/code/modules/food/food.dm b/code/modules/food/food.dm
index a972494515e..acd2dcc96f7 100644
--- a/code/modules/food/food.dm
+++ b/code/modules/food/food.dm
@@ -797,12 +797,13 @@
 		if(!reagents.total_volume)
 			var/mob/M = usr
 			var/obj/item/weapon/paper/paper = locate() in src
-			M.visible_message( \
-				"\blue [M] takes a piece of paper from the cookie!", \
-				"\blue You take a piece of paper from the cookie! Read it!" \
-			)
-			M.put_in_hand(paper)
-			paper.add_fingerprint(M)
+			if(paper)
+				M.visible_message( \
+					"\blue [M] takes a piece of paper from the cookie!", \
+					"\blue You take a piece of paper from the cookie! Read it!" \
+				)
+				M.put_in_hand(paper)
+				paper.add_fingerprint(M)
 
 /obj/item/weapon/reagent_containers/food/snacks/badrecipe
 	name = "Burned mess"
diff --git a/code/modules/mob/living/carbon/human/human.dm b/code/modules/mob/living/carbon/human/human.dm
index f9b432785e5..cdfa1eb3f8a 100644
--- a/code/modules/mob/living/carbon/human/human.dm
+++ b/code/modules/mob/living/carbon/human/human.dm
@@ -2051,7 +2051,7 @@ It can still be worn/put on as normal.
 	var/obj/item/device/pda/pda = wear_id
 	var/obj/item/weapon/card/id/id = wear_id
 	if (istype(pda))
-		if (pda.id)
+		if (pda.id && istype(pda.id, /obj/item/weapon/card/id))
 			. = pda.id.assignment
 		else
 			. = pda.ownjob
diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index 5b08451b52c..e88b5d0756a 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -467,7 +467,7 @@
 					var/transfer_coefficient
 
 					transfer_coefficient = 1
-					if(head && (head.body_parts_covered & HEAD) && (environment.temperature < head.protective_temperature))
+					if(head && (head.body_parts_covered & HEAD) && (environment.temperature < head.protective_temperature) && !istype(head, /obj/item/weapon/paper))
 						transfer_coefficient *= head.heat_transfer_coefficient
 					if(wear_mask && (wear_mask.body_parts_covered & HEAD) && (environment.temperature < wear_mask.protective_temperature))
 						transfer_coefficient *= wear_mask.heat_transfer_coefficient
diff --git a/code/modules/mob/mob_grab.dm b/code/modules/mob/mob_grab.dm
index f190b175576..3d9e3792770 100644
--- a/code/modules/mob/mob_grab.dm
+++ b/code/modules/mob/mob_grab.dm
@@ -83,6 +83,8 @@
 
 
 /obj/item/weapon/grab/proc/s_click(obj/screen/S as obj)
+	if (!affecting)
+		return
 	if (assailant.next_move > world.time)
 		return
 	if ((!( assailant.canmove ) || assailant.lying))
diff --git a/code/modules/mob/new_player/preferences.dm b/code/modules/mob/new_player/preferences.dm
index dcfb3b7719f..33eca64b064 100644
--- a/code/modules/mob/new_player/preferences.dm
+++ b/code/modules/mob/new_player/preferences.dm
@@ -374,6 +374,8 @@ datum/preferences
 
 
 	proc/process_link(mob/user, list/link_tags)
+		if(!usr)
+			return
 		if(link_tags["occ"])
 			if(link_tags["cancel"])
 				user << browse(null, "window=\ref[user]occupation")
diff --git a/code/modules/power/apc.dm b/code/modules/power/apc.dm
index 9075a4732b5..9ec0efd7156 100644
--- a/code/modules/power/apc.dm
+++ b/code/modules/power/apc.dm
@@ -845,18 +845,19 @@
 			malfai.malfhack = src
 			malfai.malfhacking = 1
 			sleep(600)
-			if (!src.aidisabled)
-				malfai.malfhack = null
-				malfai.malfhacking = 0
-				if (ticker.mode.config_tag == "malfunction")
-					if (src.z == 1) //if (is_type_in_list(get_area(src), the_station_areas))
-						ticker.mode:apcs++
-				if(usr:parent)
-					src.malfai = usr:parent
-				else
-					src.malfai = usr
-				malfai << "Hack complete. The APC is now under your exclusive control."
-				updateicon()
+			if(src)
+				if (!src.aidisabled)
+					malfai.malfhack = null
+					malfai.malfhacking = 0
+					if (ticker.mode.config_tag == "malfunction")
+						if (src.z == 1) //if (is_type_in_list(get_area(src), the_station_areas))
+							ticker.mode:apcs++
+					if(usr:parent)
+						src.malfai = usr:parent
+					else
+						src.malfai = usr
+					malfai << "Hack complete. The APC is now under your exclusive control."
+					updateicon()
 
 	else if (href_list["occupyapc"])
 		malfoccupy(usr)