diff --git a/src/ZB.MOM.WW.LmxOpcUa.Host/OpcUa/LmxNodeManager.cs b/src/ZB.MOM.WW.LmxOpcUa.Host/OpcUa/LmxNodeManager.cs
index 6851aec..210a82f 100644
--- a/src/ZB.MOM.WW.LmxOpcUa.Host/OpcUa/LmxNodeManager.cs
+++ b/src/ZB.MOM.WW.LmxOpcUa.Host/OpcUa/LmxNodeManager.cs
@@ -85,12 +85,17 @@ namespace ZB.MOM.WW.LmxOpcUa.Host.OpcUa
                 rootFolder.NodeId = new NodeId("ZB", NamespaceIndex);
                 rootFolder.AddReference(ReferenceTypeIds.Organizes, true, ObjectIds.ObjectsFolder);
 
-                // Add reverse reference from Objects folder to our root
-                var extRefs = _externalReferences ?? new Dictionary<NodeId, IList<IReference>>();
-                AddExternalReference(ObjectIds.ObjectsFolder, ReferenceTypeIds.Organizes, false, rootFolder.NodeId, extRefs);
-
                 AddPredefinedNode(SystemContext, rootFolder);
 
+                // Add reverse reference from Objects folder → ZB root.
+                // BuildAddressSpace runs after CreateAddressSpace completes, so the
+                // externalReferences dict has already been consumed by the core node manager.
+                // Use MasterNodeManager.AddReferences to route the reference correctly.
+                Server.NodeManager.AddReferences(ObjectIds.ObjectsFolder, new List<IReference>
+                {
+                    new NodeStateReference(ReferenceTypeIds.Organizes, false, rootFolder.NodeId)
+                });
+
                 // Create nodes for each object in hierarchy
                 var nodeMap = new Dictionary<int, NodeState>();
 
diff --git a/src/ZB.MOM.WW.LmxOpcUa.Host/Program.cs b/src/ZB.MOM.WW.LmxOpcUa.Host/Program.cs
index 61473d4..4aa9367 100644
--- a/src/ZB.MOM.WW.LmxOpcUa.Host/Program.cs
+++ b/src/ZB.MOM.WW.LmxOpcUa.Host/Program.cs
@@ -8,6 +8,10 @@ namespace ZB.MOM.WW.LmxOpcUa.Host
     {
         static int Main(string[] args)
         {
+            // Set working directory to exe location so relative log paths resolve correctly
+            // (Windows services default to System32)
+            Environment.CurrentDirectory = AppDomain.CurrentDomain.BaseDirectory;
+
             Log.Logger = new LoggerConfiguration()
                 .MinimumLevel.Information()
                 .WriteTo.Console()