diff --git a/pom.xml b/pom.xml
index 7dc310673..a9c9ab3c0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 
     <groupId>me.lokka30</groupId>
     <artifactId>LevelledMobs</artifactId>
-    <version>3.2.4 b557</version>
+    <version>3.2.5 b564</version>
     <packaging>jar</packaging>
 
     <name>LevelledMobs</name>
diff --git a/src/main/java/me/lokka30/levelledmobs/listeners/EntitySpawnListener.java b/src/main/java/me/lokka30/levelledmobs/listeners/EntitySpawnListener.java
index 00522ec3c..a78cb1f39 100644
--- a/src/main/java/me/lokka30/levelledmobs/listeners/EntitySpawnListener.java
+++ b/src/main/java/me/lokka30/levelledmobs/listeners/EntitySpawnListener.java
@@ -68,6 +68,9 @@ public void onEntitySpawn(@NotNull final EntitySpawnEvent event) {
             return;
         }
 
+        if (event instanceof CreatureSpawnEvent && ((CreatureSpawnEvent) event).getSpawnReason().equals(CreatureSpawnEvent.SpawnReason.SPAWNER))
+            lmEntity.setSpawnReason(LevelledMobSpawnReason.SPAWNER);
+
         if (main.configUtils.playerLevellingEnabled && lmEntity.getPlayerForLevelling() == null)
             updateMobForPlayerLevelling(lmEntity);
 
@@ -206,6 +209,7 @@ public void run() {
     public void preprocessMob(final @NotNull LivingEntityWrapper lmEntity, @NotNull final Event event){
         if (!lmEntity.reEvaluateLevel && lmEntity.isLevelled())
             return;
+        if (lmEntity.getLivingEntity() == null) return;
 
         LevelledMobSpawnReason spawnReason = LevelledMobSpawnReason.DEFAULT;
         AdditionalLevelInformation additionalInfo = AdditionalLevelInformation.NOT_APPLICABLE;
diff --git a/src/main/java/me/lokka30/levelledmobs/managers/LevelManager.java b/src/main/java/me/lokka30/levelledmobs/managers/LevelManager.java
index b1b283250..2794f25a9 100644
--- a/src/main/java/me/lokka30/levelledmobs/managers/LevelManager.java
+++ b/src/main/java/me/lokka30/levelledmobs/managers/LevelManager.java
@@ -1198,9 +1198,34 @@ private void getPlayersNearMob(final @NotNull LivingEntityWrapper lmEntity){
      * @return if the mob is levelled or not
      */
     public boolean isLevelled(@NotNull final LivingEntity livingEntity) {
-        synchronized (livingEntity.getPersistentDataContainer()) {
-            return livingEntity.getPersistentDataContainer().has(main.namespaced_keys.levelKey, PersistentDataType.INTEGER);
+        boolean hadError = false;
+        boolean succeeded = false;
+        boolean isLevelled = false;
+
+        for (int i = 0; i < 2; i++) {
+            try {
+                synchronized (livingEntity.getPersistentDataContainer()) {
+                    isLevelled = livingEntity.getPersistentDataContainer().has(main.namespaced_keys.levelKey, PersistentDataType.INTEGER);
+                }
+                succeeded = true;
+                break;
+            }
+            catch (ConcurrentModificationException ignored) {
+                hadError = true;
+                try
+                { Thread.sleep(10); }
+                catch (InterruptedException ignored2) { return false; }
+            }
         }
+
+        if (hadError) {
+            if (succeeded)
+                Utils.logger.warning("Got ConcurrentModificationException in LevelManager checking entity isLevelled, succeeded on retry");
+            else
+                Utils.logger.warning("Got ConcurrentModificationException (2x) in LevelManager checking entity isLevelled");
+        }
+
+        return isLevelled;
     }
 
     /**
diff --git a/src/main/java/me/lokka30/levelledmobs/managers/MobsQueueManager.java b/src/main/java/me/lokka30/levelledmobs/managers/MobsQueueManager.java
index c105a9c02..0e9a09478 100644
--- a/src/main/java/me/lokka30/levelledmobs/managers/MobsQueueManager.java
+++ b/src/main/java/me/lokka30/levelledmobs/managers/MobsQueueManager.java
@@ -67,13 +67,22 @@ private void main() throws InterruptedException{
             final QueueItem item = queue.poll(200, TimeUnit.MILLISECONDS);
             if (item == null) continue;
 
-            if (item.lmEntity.getLivingEntity() != null) {
-                if (!item.lmEntity.getIsPopulated()) continue;
-                if (!item.lmEntity.getShouldShowLM_Nametag()) continue;
-                main.levelManager.entitySpawnListener.preprocessMob(item.lmEntity, item.event);
+            String lastEntityType = null;
+            try {
+                if (item.lmEntity.getLivingEntity() != null) {
+                    if (!item.lmEntity.getIsPopulated()) continue;
+                    if (!item.lmEntity.getShouldShowLM_Nametag()) continue;
+                    lastEntityType = item.lmEntity.getNameIfBaby();
+                    main.levelManager.entitySpawnListener.preprocessMob(item.lmEntity, item.event);
+                }
+            }
+            catch (Exception e){
+                Utils.logger.error("Got exception while processing " + (lastEntityType != null ? lastEntityType : "(unknown)"));
+                e.printStackTrace();
+            }
+            finally {
+                item.lmEntity.free();
             }
-
-            item.lmEntity.free();
         }
 
         isRunning = false;
diff --git a/src/main/java/me/lokka30/levelledmobs/managers/NametagQueueManager.java b/src/main/java/me/lokka30/levelledmobs/managers/NametagQueueManager.java
index 0d9cf4146..08c2ccfe8 100644
--- a/src/main/java/me/lokka30/levelledmobs/managers/NametagQueueManager.java
+++ b/src/main/java/me/lokka30/levelledmobs/managers/NametagQueueManager.java
@@ -88,60 +88,74 @@ private void main() throws InterruptedException{
                 continue;
             }
 
-            final int nametagTimerResetTime = item.lmEntity.getNametagCooldownTime();
+            String lastEntityType = null;
+            try {
+                lastEntityType = item.lmEntity.getNameIfBaby();
+                processItem(item);
+            }
+            catch (Exception e){
+                Utils.logger.error("Got exception while processing nametag updates on " + (lastEntityType != null ? lastEntityType : "(unknown)"));
+                e.printStackTrace();
+            }
+            finally {
+                item.lmEntity.free();
+            }
+        }
 
-            if (nametagTimerResetTime > 0 && !"".equals(item.nametag)) {
-                synchronized (NametagTimerChecker.nametagTimer_Lock) {
-                    final Map<Player, WeakHashMap<LivingEntity, Instant>> nametagCooldownQueue = main.nametagTimerChecker.getNametagCooldownQueue();
+        isRunning = false;
+    }
 
-                    if (item.lmEntity.playersNeedingNametagCooldownUpdate != null) {
-                        // record which players should get the cooldown for this mob
-                        // public Map<Player, WeakHashMap<LivingEntity, Instant>> nametagCooldownQueue;
-                        for (final Player player : item.lmEntity.playersNeedingNametagCooldownUpdate) {
-                            if (!nametagCooldownQueue.containsKey(player)) continue;
+    private void processItem(final @NotNull QueueItem item){
+        final int nametagTimerResetTime = item.lmEntity.getNametagCooldownTime();
 
-                            nametagCooldownQueue.get(player).put(item.lmEntity.getLivingEntity(), Instant.now());
-                            main.nametagTimerChecker.cooldownTimes.put(item.lmEntity.getLivingEntity(), item.lmEntity.getNametagCooldownTime());
-                        }
+        if (nametagTimerResetTime > 0 && !"".equals(item.nametag)) {
+            synchronized (NametagTimerChecker.nametagTimer_Lock) {
+                final Map<Player, WeakHashMap<LivingEntity, Instant>> nametagCooldownQueue = main.nametagTimerChecker.getNametagCooldownQueue();
 
-                        // if any players already have a cooldown on this mob then don't remove the cooldown
-                        for (final Player player : nametagCooldownQueue.keySet()){
-                            if (item.lmEntity.playersNeedingNametagCooldownUpdate.contains(player)) continue;
+                if (item.lmEntity.playersNeedingNametagCooldownUpdate != null) {
+                    // record which players should get the cooldown for this mob
+                    // public Map<Player, WeakHashMap<LivingEntity, Instant>> nametagCooldownQueue;
+                    for (final Player player : item.lmEntity.playersNeedingNametagCooldownUpdate) {
+                        if (!nametagCooldownQueue.containsKey(player)) continue;
 
-                            if (nametagCooldownQueue.get(player).containsKey(item.lmEntity.getLivingEntity()))
-                                item.lmEntity.playersNeedingNametagCooldownUpdate.add(player);
-                        }
+                        nametagCooldownQueue.get(player).put(item.lmEntity.getLivingEntity(), Instant.now());
+                        main.nametagTimerChecker.cooldownTimes.put(item.lmEntity.getLivingEntity(), item.lmEntity.getNametagCooldownTime());
                     }
-                    else{
-                        // if there's any existing cooldowns we'll use them
-                        for (final Player player : nametagCooldownQueue.keySet()){
-                            if (nametagCooldownQueue.get(player).containsKey(item.lmEntity.getLivingEntity())) {
-                                if (item.lmEntity.playersNeedingNametagCooldownUpdate == null)
-                                    item.lmEntity.playersNeedingNametagCooldownUpdate = new HashSet<>();
-
-                                item.lmEntity.playersNeedingNametagCooldownUpdate.add(player);
-                            }
+
+                    // if any players already have a cooldown on this mob then don't remove the cooldown
+                    for (final Player player : nametagCooldownQueue.keySet()){
+                        if (item.lmEntity.playersNeedingNametagCooldownUpdate.contains(player)) continue;
+
+                        if (nametagCooldownQueue.get(player).containsKey(item.lmEntity.getLivingEntity()))
+                            item.lmEntity.playersNeedingNametagCooldownUpdate.add(player);
+                    }
+                }
+                else{
+                    // if there's any existing cooldowns we'll use them
+                    for (final Player player : nametagCooldownQueue.keySet()){
+                        if (nametagCooldownQueue.get(player).containsKey(item.lmEntity.getLivingEntity())) {
+                            if (item.lmEntity.playersNeedingNametagCooldownUpdate == null)
+                                item.lmEntity.playersNeedingNametagCooldownUpdate = new HashSet<>();
+
+                            item.lmEntity.playersNeedingNametagCooldownUpdate.add(player);
                         }
                     }
                 }
             }
-            else if (item.lmEntity.playersNeedingNametagCooldownUpdate != null)
-                item.lmEntity.playersNeedingNametagCooldownUpdate = null;
+        }
+        else if (item.lmEntity.playersNeedingNametagCooldownUpdate != null)
+            item.lmEntity.playersNeedingNametagCooldownUpdate = null;
 
-            synchronized (NametagTimerChecker.entityTarget_Lock){
-                if (main.nametagTimerChecker.entityTargetMap.containsKey(item.lmEntity.getLivingEntity())){
-                    if (item.lmEntity.playersNeedingNametagCooldownUpdate == null)
-                        item.lmEntity.playersNeedingNametagCooldownUpdate = new HashSet<>();
+        synchronized (NametagTimerChecker.entityTarget_Lock){
+            if (main.nametagTimerChecker.entityTargetMap.containsKey(item.lmEntity.getLivingEntity())){
+                if (item.lmEntity.playersNeedingNametagCooldownUpdate == null)
+                    item.lmEntity.playersNeedingNametagCooldownUpdate = new HashSet<>();
 
-                    item.lmEntity.playersNeedingNametagCooldownUpdate.add(main.nametagTimerChecker.entityTargetMap.get(item.lmEntity.getLivingEntity()));
-                }
+                item.lmEntity.playersNeedingNametagCooldownUpdate.add(main.nametagTimerChecker.entityTargetMap.get(item.lmEntity.getLivingEntity()));
             }
-
-            updateNametag(item.lmEntity, item.nametag, item.players);
-            item.lmEntity.free();
         }
 
-        isRunning = false;
+        updateNametag(item.lmEntity, item.nametag, item.players);
     }
 
     private void updateNametag(final @NotNull LivingEntityWrapper lmEntity, final String nametag, final List<Player> players) {