really fix it this time

src/net/citizensnpcs/command/command/NPCCommands.java

@@ -120,8 +120,6 @@ public class NPCCommands {
     public void renameNPC(CommandContext args, Player player, NPC npc) {
         String oldName = npc.getName();
         npc.setName(args.getString(1));
-        // Must reselect NPC after it is despawned
-        npcManager.selectNPC(player, npc);
         Messaging.send(
                 player,
                 ChatColor.GREEN + "You renamed " + StringHelper.wrap(oldName) + " to "

src/net/citizensnpcs/npc/CitizensNPCManager.java

@@ -52,7 +52,7 @@ public class CitizensNPCManager implements NPCManager {
 
     public void despawn(NPC npc, boolean deselect) {
         npc.getTrait(SpawnLocation.class).setLocation(npc.getBukkitEntity().getLocation());
-        if (deselect)
+        if (!deselect)
             selected.removeAll(npc.getId());
         npc.getBukkitEntity().remove();
     }