diff --git a/QSB/EchoesOfTheEye/Ghosts/Messages/ChangeActionMessage.cs b/QSB/EchoesOfTheEye/Ghosts/Messages/ChangeActionMessage.cs
index a13048ab..ac801329 100644
--- a/QSB/EchoesOfTheEye/Ghosts/Messages/ChangeActionMessage.cs
+++ b/QSB/EchoesOfTheEye/Ghosts/Messages/ChangeActionMessage.cs
@@ -10,7 +10,13 @@ internal class ChangeActionMessage : QSBWorldObjectMessage<QSBGhostBrain, GhostA
 
 	public override void OnReceiveRemote()
 	{
+		if (QSBCore.IsHost)
+		{
+			DebugLog.ToConsole("Error - Received ChangeActionMessage on host. Something has gone horribly wrong!", OWML.Common.MessageType.Error);
+			return;
+		}
+
 		DebugLog.DebugWrite($"{WorldObject.AttachedObject._name} Change action to {Data}");
 		WorldObject.ChangeAction(WorldObject.GetAction(Data), true);
 	}
-}
+}
\ No newline at end of file
diff --git a/QSB/EchoesOfTheEye/Ghosts/Patches/GhostBrainPatches.cs b/QSB/EchoesOfTheEye/Ghosts/Patches/GhostBrainPatches.cs
index 6f5fdd5c..fbd16770 100644
--- a/QSB/EchoesOfTheEye/Ghosts/Patches/GhostBrainPatches.cs
+++ b/QSB/EchoesOfTheEye/Ghosts/Patches/GhostBrainPatches.cs
@@ -305,6 +305,11 @@ internal class GhostBrainPatches : QSBPatch
 			return true;
 		}
 
+		if (!QSBCore.IsHost)
+		{
+			return false;
+		}
+
 		__instance.GetWorldObject<QSBGhostBrain>().EvaluateActions();
 		return false;
 	}
diff --git a/QSB/EchoesOfTheEye/Ghosts/WorldObjects/QSBGhostBrain.cs b/QSB/EchoesOfTheEye/Ghosts/WorldObjects/QSBGhostBrain.cs
index 8481df4e..e7b4f28d 100644
--- a/QSB/EchoesOfTheEye/Ghosts/WorldObjects/QSBGhostBrain.cs
+++ b/QSB/EchoesOfTheEye/Ghosts/WorldObjects/QSBGhostBrain.cs
@@ -546,7 +546,11 @@ public class QSBGhostBrain : WorldObject<GhostBrain>, IGhostObject
 	{
 		AttachedObject.enabled = false;
 		AttachedObject._controller.GetDreamLanternController().enabled = false;
-		ChangeAction(null);
+		if (QSBCore.IsHost)
+		{
+			ChangeAction(null);
+		}
+		
 		_data.OnPlayerExitDreamWorld();
 	}
 }
diff --git a/QSB/EchoesOfTheEye/Ghosts/WorldObjects/QSBGhostSensors.cs b/QSB/EchoesOfTheEye/Ghosts/WorldObjects/QSBGhostSensors.cs
index 6c919f49..1d3b5b2e 100644
--- a/QSB/EchoesOfTheEye/Ghosts/WorldObjects/QSBGhostSensors.cs
+++ b/QSB/EchoesOfTheEye/Ghosts/WorldObjects/QSBGhostSensors.cs
@@ -45,6 +45,12 @@ public class QSBGhostSensors : WorldObject<GhostSensors>, IGhostObject
 		foreach (var pair in _data.players)
 		{
 			var player = pair.Value;
+
+			if (player.player.AssignedSimulationLantern == null)
+			{
+				continue;
+			}
+
 			var lanternController = player.player.AssignedSimulationLantern.AttachedObject.GetLanternController();
 			var playerLightSensor = Locator.GetPlayerLightSensor();
 			player.sensor.isPlayerHoldingLantern = lanternController.IsHeldByPlayer();