Fixed hopefully last respawn issues.

code/modules/mob/death.dm

@@ -17,7 +17,7 @@
 	gibs(loc, viruses, dna)
 
 	dead_mob_list -= src
-	if(client)
+	if(client && !src in respawnable_list)
 		respawnable_list += src
 	spawn(15)
 		if(animation)	del(animation)
@@ -44,7 +44,7 @@
 	new /obj/effect/decal/cleanable/ash(loc)
 
 	dead_mob_list -= src
-	if(client)
+	if(client && !src in respawnable_list)
 		respawnable_list += src
 	spawn(15)
 		if(animation)	del(animation)
@@ -56,6 +56,6 @@
 
 	living_mob_list -= src
 	dead_mob_list += src
-	if(client)
+	if(client && !src in respawnable_list)
 		respawnable_list += src
 	return ..(gibbed)

code/modules/mob/living/carbon/brain/MMI.dm

@@ -28,12 +28,12 @@
 				return
 			for(var/mob/V in viewers(src, null))
 				V.show_message(text("\blue [user] sticks \a [O] into \the [src]."))
-
 			brainmob = O:brainmob
 			O:brainmob = null
 			brainmob.loc = src
 			brainmob.container = src
 			brainmob.stat = 0
+			respawnable_list -= brainmob
 			dead_mob_list -= brainmob//Update dem lists
 			living_mob_list += brainmob
 
@@ -104,6 +104,7 @@
 		dropbrain(var/obj/item/brain/brain, var/turf/dropspot)
 			brainmob.container = null//Reset brainmob mmi var.
 			brainmob.loc = brain//Throw mob into brain.
+			respawnable_list += brainmob
 			living_mob_list -= brainmob//Get outta here
 			brain.brainmob = brainmob//Set the brain to use the brainmob
 			brain.brainmob.cancel_camera()

code/modules/mob/living/carbon/brain/brain_item.dm

@@ -32,6 +32,7 @@
 			brainmob.timeofhostdeath = H.timeofdeath
 			if(H.mind)
 				H.mind.transfer_to(brainmob)
+			respawnable_list += brainmob
 			brainmob << "\blue You feel slightly disoriented. That's normal when you're just a brain."
 			return
 
@@ -86,6 +87,7 @@
 			M.ghostize()
 
 		if(brainmob.mind)
+			respawnable_list -= brainmob
 			brainmob.mind.transfer_to(M)
 		else
 			M.key = brainmob.key

code/modules/mob/mob.dm

@@ -938,13 +938,17 @@ mob/verb/yank_out_object()
 		var/picked = input("Please select a creature to respawn as", "Respawn as Mindless Creature")  as null|anything in creatures
 		switch(picked)
 			if("Mouse")
+				respawnable_list -= usr
 				become_mouse()
+				respawnable_list += usr
 			else
 				var/mob/living/simple_animal/picked_animal = picked
 				if(istype(picked_animal) && !picked_animal.key)
+					respawnable_list -= usr
 					picked_animal.key = key
+					respawnable_list += usr
 				else
-					message_admins("Failed to check type")
+//					message_admins("Failed to check type")
 	else
 		usr << "You are not dead or you have given up your right to be respawned!"
 		return