diff --git a/code/datums/datumvars.dm b/code/datums/datumvars.dm
index e666a03653..e3c9ff8c86 100644
--- a/code/datums/datumvars.dm
+++ b/code/datums/datumvars.dm
@@ -866,6 +866,7 @@ client
 			return
 
 		var/new_organ = input("Please choose an organ to add.","Organ",null) as null|anything in typesof(/datum/organ/internal)-/datum/organ/internal
+		if(!new_organ) return
 
 		if(!M)
 			usr << "Mob doesn't exist anymore"
diff --git a/code/defines/procs/radio.dm b/code/defines/procs/radio.dm
index 0cbd009076..1e0e045928 100644
--- a/code/defines/procs/radio.dm
+++ b/code/defines/procs/radio.dm
@@ -47,7 +47,7 @@
 /proc/get_receiver_reception(var/receiver, var/datum/signal/signal)
 	if(receiver && check_signal(signal))
 		var/turf/pos = get_turf(receiver)
-		if(pos.z in signal.data["level"])
+		if(pos && (pos.z in signal.data["level"]))
 			return TELECOMMS_RECEPTION_RECEIVER
 	return TELECOMMS_RECEPTION_NONE
 
diff --git a/code/modules/hydroponics/seed_datums.dm b/code/modules/hydroponics/seed_datums.dm
index 509d069754..33e6f47c57 100644
--- a/code/modules/hydroponics/seed_datums.dm
+++ b/code/modules/hydroponics/seed_datums.dm
@@ -217,8 +217,8 @@ proc/populate_seed_list()
 			"water",
 			"potassium",
 			"plasticide",
-			"slimetoxin",
-			"aslimetoxin",
+			"mutationtoxin",
+			"amutationtoxin",
 			"inaprovaline",
 			"space_drugs",
 			"paroxetine",
diff --git a/code/modules/hydroponics/vines.dm b/code/modules/hydroponics/vines.dm
index b25c03080e..699063fec4 100644
--- a/code/modules/hydroponics/vines.dm
+++ b/code/modules/hydroponics/vines.dm
@@ -362,6 +362,8 @@
 
 		SV.life()
 
+		if(!SV) continue
+
 		if(SV.energy < 2) //If tile isn't fully grown
 			var/chance
 			if(seed)
diff --git a/code/modules/mob/dead/observer/observer.dm b/code/modules/mob/dead/observer/observer.dm
index c2f7adc171..c1d577834d 100644
--- a/code/modules/mob/dead/observer/observer.dm
+++ b/code/modules/mob/dead/observer/observer.dm
@@ -143,7 +143,7 @@ Works together with spawning an observer, noted above.
 		ghost.can_reenter_corpse = can_reenter_corpse
 		ghost.timeofdeath = src.timeofdeath //BS12 EDIT
 		ghost.key = key
-		if(!ghost.client.holder && !config.antag_hud_allowed)		// For new ghosts we remove the verb from even showing up if it's not allowed.
+		if(ghost.client && !ghost.client.holder && !config.antag_hud_allowed)		// For new ghosts we remove the verb from even showing up if it's not allowed.
 			ghost.verbs -= /mob/dead/observer/verb/toggle_antagHUD	// Poor guys, don't know what they are missing!
 		return ghost
 
diff --git a/code/modules/research/xenoarchaeology/artifact/artifact_replicator.dm b/code/modules/research/xenoarchaeology/artifact/artifact_replicator.dm
index 1b3afdd22c..4108986789 100644
--- a/code/modules/research/xenoarchaeology/artifact/artifact_replicator.dm
+++ b/code/modules/research/xenoarchaeology/artifact/artifact_replicator.dm
@@ -102,7 +102,7 @@
 						spawned_obj.desc += " It is made of [source_material]."
 					else
 						spawned_obj.desc = "It is made of [source_material]."
-				source_material.loc = null
+				del(source_material)
 
 			spawn_progress_time = 0
 			max_spawn_time = rand(30,100)