diff --git a/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs b/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
index a03752a483..d8098857b4 100755
--- a/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
@@ -115,6 +115,17 @@ namespace OpenSim.Region.CoreModules.Avatar.Attachments
                 return;
 
             m_invAccessModule = m_scene.RequestModuleInterface<IInventoryAccessModule>();
+            if (m_invAccessModule is null)
+            {
+                Enabled = false;
+                m_scene.UnregisterModuleInterface<IAttachmentsModule>(this);
+                m_scene.EventManager.OnNewClient -= SubscribeToClientEvents;
+                m_scene.EventManager.OnStartScript -= OnScriptStarted;
+                m_scene.EventManager.OnStopScript -= OnScriptStopped;
+                m_log.WarnFormat("[ATTACHMENTS MODULE]: InventoryService unvailable!. Module disabled");
+                return;
+            }
+
             m_regionConsole = scene.RequestModuleInterface<IRegionConsole>();
             if (m_regionConsole is not null)
             {
diff --git a/OpenSim/Region/CoreModules/Framework/InventoryAccess/HGInventoryAccessModule.cs b/OpenSim/Region/CoreModules/Framework/InventoryAccess/HGInventoryAccessModule.cs
index a788d2951f..496cf4031c 100644
--- a/OpenSim/Region/CoreModules/Framework/InventoryAccess/HGInventoryAccessModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/InventoryAccess/HGInventoryAccessModule.cs
@@ -315,9 +315,16 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
                             bool RezSelected, bool RemoveItem, UUID fromTaskID, bool attachment)
         {
             InventoryItemBase item = m_Scene.InventoryService.GetItem(remoteClient.AgentId, itemID);
-            if (item == null || item.AssetID.IsZero())
+            if (item is null || item.AssetID.IsZero())
                 return null;
 
+            if (attachment && (item.Flags & (uint)InventoryItemFlags.ObjectHasMultipleItems) != 0)
+            {
+                if (remoteClient is not null && remoteClient.IsActive)
+                    remoteClient.SendAlertMessage("You can't attach multiple objects to one spot");
+                return null;
+            }
+
             string userAssetServer;
             if (IsForeignUser(remoteClient.AgentId, out userAssetServer))
             {
diff --git a/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs b/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
index 772e432314..ce49cf02e6 100644
--- a/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
@@ -923,9 +923,16 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
 //            m_log.DebugFormat("[INVENTORY ACCESS MODULE]: RezObject for {0}, item {1}", remoteClient.Name, itemID);
             InventoryItemBase item = m_Scene.InventoryService.GetItem(remoteClient.AgentId, itemID);
 
-            if (item == null)
+            if (item is null)
                 return null;
 
+            if (attachment && (item.Flags & (uint)InventoryItemFlags.ObjectHasMultipleItems) != 0)
+            {
+                if (remoteClient is not null && remoteClient.IsActive)
+                    remoteClient.SendAlertMessage("You can't attach multiple objects to one spot");
+                return null;
+            }
+
             item.Owner = remoteClient.AgentId;
 
             return RezObject(