diff --git a/Implab.ServiceHost/Implab.ServiceHost.csproj b/Implab.ServiceHost/Implab.ServiceHost.csproj
--- a/Implab.ServiceHost/Implab.ServiceHost.csproj
+++ b/Implab.ServiceHost/Implab.ServiceHost.csproj
@@ -7,7 +7,7 @@
     Provides simple and flexible Xml configuration for UnityContainer.
     </Description>
     <Copyright>2012-2018 Sergey Smirnov</Copyright>
-    <Version>1.0.1</Version>
+    <Version>1.0.3</Version>
     <PackageLicenseUrl>https://bitbucket.org/wozard/implabnet/src/v3/Implab/license.txt</PackageLicenseUrl>
     <PackageProjectUrl>https://bitbucket.org/wozard/implabnet</PackageProjectUrl>
     <RepositoryUrl>https://bitbucket.org/wozard/implabnet</RepositoryUrl>
diff --git a/Implab.ServiceHost/src/Unity/ContainerBuilder.cs b/Implab.ServiceHost/src/Unity/ContainerBuilder.cs
--- a/Implab.ServiceHost/src/Unity/ContainerBuilder.cs
+++ b/Implab.ServiceHost/src/Unity/ContainerBuilder.cs
@@ -101,10 +101,12 @@ namespace Implab.ServiceHost.Unity {
 
         public void AddNamespace(string ns) {
             m_resolver.AddNamespace(ns);
+            Log.Log($"AddNamespace: {ns}");
         }
 
         public void AddAssembly(string assembly) {
-
+            var asm = Assembly.Load(assembly);
+            Log.Log($"AddAssembly: {assembly} -> {asm.FullName}");
         }
 
         /// <summary>
@@ -145,6 +147,9 @@ namespace Implab.ServiceHost.Unity {
 
         public void LoadConfig(Uri location) {
             Safe.ArgumentNotNull(location, nameof(location));
+            
+            Log.Log($"LoadConfig {location}");
+            Safe.ArgumentNotNull(location, nameof(location));
 
             m_location = location;
 
diff --git a/Implab/src/Safe.cs b/Implab/src/Safe.cs
--- a/Implab/src/Safe.cs
+++ b/Implab/src/Safe.cs
@@ -75,27 +75,31 @@ namespace Implab
         }
 
         public static void Dispose(params IDisposable[] objects) {
-            foreach (var d in objects)
-                if (d != null)
-                    d.Dispose();
+            if (objects != null)
+                foreach (var d in objects)
+                    if (d != null)
+                        d.Dispose();
         }
 
         public static void Dispose(params object[] objects) {
-            foreach (var obj in objects) {
-                var d = obj as IDisposable;
-                if (d != null)
-                    d.Dispose();
-            }
+            if (objects != null)
+                foreach (var obj in objects) {
+                    var d = obj as IDisposable;
+                    if (d != null)
+                        d.Dispose();
+                }
         }
 
         public static void DisposeCollection(IEnumerable<IDisposable> objects) {
-            foreach (var d in objects)
-                Dispose(d);
+            if (objects != null) 
+                foreach (var d in objects)
+                    Dispose(d);
         }
 
         public static void DisposeCollection(IEnumerable objects) {
-            foreach (var d in objects)
-                Dispose(d);
+            if (objects != null)
+                foreach (var d in objects)
+                    Dispose(d);
         }
 
         public static void Dispose(object obj) {