Fix2

code/controllers/subsystem/processing/quirks.dm

@@ -37,11 +37,11 @@ PROCESSING_SUBSYSTEM_DEF(quirks)
 	if(job?.blacklisted_quirks)
 		cut = filter_quirks(quirks, job)
 	for(var/V in my_quirks)
-		var/datum/quirk/Q = quirks[V]
-		if(Q)
+		if(V in quirks)
+			var/datum/quirk/Q = quirks[V]
 			user.add_quirk(Q, spawn_effects)
 		else
-			stack_trace("Invalid quirk \"[V]\" in client [cli.ckey] preferences")
+			log_admin("Invalid quirk \"[V]\" in client [cli.ckey] preferences")
 			cli.prefs.all_quirks -= V
 			badquirk = TRUE
 	if(badquirk)

code/datums/traits/negative.dm

@@ -468,5 +468,5 @@
 	H.maxHealth = H.maxHealth * 0.8
 
 /datum/quirk/flimsy/remove() //how do admins even remove traits?
-	var/mob/living/carbon/human/H = quirk_holder
-	H.maxHealth += healthchange
+	if(quirk_holder)
+		quirk_holder.maxHealth += healthchange

hyperstation/code/datums/traits/good.dm

@@ -10,8 +10,8 @@
 	M.grant_language(/datum/language/narsie)
 
 /datum/quirk/narsianspeaker/remove()
-	var/mob/living/M = quirk_holder
-	M?.remove_language(/datum/language/narsie)
+	if(quirk_holder)
+		quirk_holder.remove_language(/datum/language/ratvar)
 
 /datum/quirk/ratvarianspeaker
 	name = "Ratvarian speaker"
@@ -25,8 +25,8 @@
 	M.grant_language(/datum/language/ratvar)
 
 /datum/quirk/ratvarianspeaker/remove()
-	var/mob/living/M = quirk_holder
-	M?.remove_language(/datum/language/ratvar)
+	if(quirk_holder)
+		quirk_holder.remove_language(/datum/language/ratvar)
 
 /datum/quirk/encodedspeaker
 	name = "Encoded Audio speaker"
@@ -40,8 +40,8 @@
 	M.grant_language(/datum/language/machine)
 
 /datum/quirk/encodedspeaker/remove()
-	var/mob/living/M = quirk_holder
-	M?.remove_language(/datum/language/machine)
+	if(quirk_holder)
+		quirk_holder.remove_language(/datum/language/ratvar)
 
 /datum/quirk/xenospeaker
 	name = "Xenocommon speaker"
@@ -55,5 +55,5 @@
 	M.grant_language(/datum/language/xenocommon)
 
 /datum/quirk/xenospeaker/remove()
-	var/mob/living/M = quirk_holder
-	M?.remove_language(/datum/language/xenocommon)
+	if(quirk_holder)
+		quirk_holder.remove_language(/datum/language/ratvar)