diff --git a/Assets/uDesktopDuplication/Examples/Scenes/Multiple Monitors.unity b/Assets/uDesktopDuplication/Examples/Scenes/Multiple Monitors.unity
index dabb2a6..09f5588 100644
Binary files a/Assets/uDesktopDuplication/Examples/Scenes/Multiple Monitors.unity and b/Assets/uDesktopDuplication/Examples/Scenes/Multiple Monitors.unity differ
diff --git a/Assets/uDesktopDuplication/Plugins/x86_64/uDesktopDuplication.dll b/Assets/uDesktopDuplication/Plugins/x86_64/uDesktopDuplication.dll
index 64a3866..b61f7b1 100644
Binary files a/Assets/uDesktopDuplication/Plugins/x86_64/uDesktopDuplication.dll and b/Assets/uDesktopDuplication/Plugins/x86_64/uDesktopDuplication.dll differ
diff --git a/Assets/uDesktopDuplication/Scripts/Lib.cs b/Assets/uDesktopDuplication/Scripts/Lib.cs
index 9fe7252..f3dbfbe 100644
--- a/Assets/uDesktopDuplication/Scripts/Lib.cs
+++ b/Assets/uDesktopDuplication/Scripts/Lib.cs
@@ -2,6 +2,8 @@
 using System.Text;
 using System.Runtime.InteropServices;
 
+#pragma warning disable 114, 465
+
 namespace uDesktopDuplication
 {
 
@@ -77,9 +79,9 @@ public static class Lib
     public delegate void DebugLogDelegate(string str);
 
     [DllImport("uDesktopDuplication")]
-    public static extern void InitializeUDD();
+    public static extern void Initialize();
     [DllImport("uDesktopDuplication")]
-    public static extern void FinalizeUDD();
+    public static extern void Finalize();
     [DllImport("uDesktopDuplication")]
     public static extern void Reinitialize();
     [DllImport("uDesktopDuplication")]
@@ -93,9 +95,9 @@ public static class Lib
     [DllImport("uDesktopDuplication")]
     public static extern void SetDebugMode(DebugMode mode);
     [DllImport("uDesktopDuplication")]
-    public static extern void SetLogFunc(IntPtr func);
+    public static extern void SetLogFunc(DebugLogDelegate func);
     [DllImport("uDesktopDuplication")]
-    public static extern void SetErrorFunc(IntPtr func);
+    public static extern void SetErrorFunc(DebugLogDelegate func);
     [DllImport("uDesktopDuplication")]
     public static extern int GetMonitorCount();
     [DllImport("uDesktopDuplication")]
diff --git a/Assets/uDesktopDuplication/Scripts/Manager.cs b/Assets/uDesktopDuplication/Scripts/Manager.cs
index eb119f0..d08dd10 100644
--- a/Assets/uDesktopDuplication/Scripts/Manager.cs
+++ b/Assets/uDesktopDuplication/Scripts/Manager.cs
@@ -52,7 +52,9 @@ public class Manager : MonoBehaviour
         }
     }
 
+    [Tooltip("Debug mode is not applied while running.")]
     [SerializeField] DebugMode debugMode = DebugMode.File;
+
     [SerializeField] int desktopDuplicationApiTimeout = 0;
     [SerializeField] float retryReinitializationDuration = 1f;
 
@@ -61,6 +63,9 @@ public class Manager : MonoBehaviour
     private float reinitializationTimer_ = 0f;
     private bool isFirstFrame_ = true;
 
+    public static event Lib.DebugLogDelegate onDebugLog = msg => Debug.Log(msg);
+    public static event Lib.DebugLogDelegate onDebugErr = msg => Debug.LogError(msg);
+
     public delegate void ReinitializeHandler();
     public static event ReinitializeHandler onReinitialized;
 
@@ -89,15 +94,18 @@ public class Manager : MonoBehaviour
         instance_ = this;
 
         Lib.SetDebugMode(debugMode);
+        Lib.SetLogFunc(onDebugLog);
+        Lib.SetErrorFunc(onDebugErr);
+
         Lib.SetTimeout(desktopDuplicationApiTimeout);
-        Lib.InitializeUDD();
+        Lib.Initialize();
 
         CreateMonitors();
     }
 
     void OnApplicationQuit()
     {
-        Lib.FinalizeUDD();
+        Lib.Finalize();
         DestroyMonitors();
     }
 
@@ -107,6 +115,9 @@ public class Manager : MonoBehaviour
         if (!isFirstFrame_) {
             Reinitialize();
         }
+
+        Lib.SetDebugMode(debugMode);
+        Lib.SetLogFunc(onDebugLog);
     }
 
     void OnDisable()
@@ -115,6 +126,9 @@ public class Manager : MonoBehaviour
             StopCoroutine(renderCoroutine_);
             renderCoroutine_ = null;
         }
+
+        Lib.SetLogFunc(null);
+        Lib.SetErrorFunc(null);
     }
 
     void Update()
diff --git a/Plugins/uDesktopDuplication/uDesktopDuplication/Debug.cpp b/Plugins/uDesktopDuplication/uDesktopDuplication/Debug.cpp
index 41d6fbf..1dc2b36 100644
--- a/Plugins/uDesktopDuplication/uDesktopDuplication/Debug.cpp
+++ b/Plugins/uDesktopDuplication/uDesktopDuplication/Debug.cpp
@@ -4,15 +4,19 @@
 #include "Debug.h"
 
 
-decltype(Debug::mode_)    Debug::mode_ = Debug::Mode::File;
-decltype(Debug::logFunc_) Debug::logFunc_ = nullptr;
-decltype(Debug::errFunc_) Debug::errFunc_ = nullptr;
-decltype(Debug::fs_)      Debug::fs_;
-decltype(Debug::ss_)      Debug::ss_;
+decltype(Debug::isInitialized_) Debug::isInitialized_ = false;
+decltype(Debug::mode_)          Debug::mode_ = Debug::Mode::File;
+decltype(Debug::logFunc_)       Debug::logFunc_ = nullptr;
+decltype(Debug::errFunc_)       Debug::errFunc_ = nullptr;
+decltype(Debug::fs_)            Debug::fs_;
+decltype(Debug::ss_)            Debug::ss_;
 
 
 void Debug::Initialize()
 {
+    if (isInitialized_) return;
+    isInitialized_ = true;
+    
     if (mode_ == Mode::File)
     {
         fs_.open("uDesktopDuplication.log");
@@ -23,6 +27,9 @@ void Debug::Initialize()
 
 void Debug::Finalize()
 {
+    if (!isInitialized_) return;
+    isInitialized_ = false;
+
     if (mode_ == Mode::File)
     {
         Debug::Log("Stop");
diff --git a/Plugins/uDesktopDuplication/uDesktopDuplication/Debug.h b/Plugins/uDesktopDuplication/uDesktopDuplication/Debug.h
index 4c4ede6..f53b986 100644
--- a/Plugins/uDesktopDuplication/uDesktopDuplication/Debug.h
+++ b/Plugins/uDesktopDuplication/uDesktopDuplication/Debug.h
@@ -64,8 +64,12 @@ private:
                 {
                     switch (level)
                     {
-                        case Level::Log   : logFunc_(ss_.str().c_str()); break;
-                        case Level::Error : errFunc_(ss_.str().c_str()); break;
+                        case Level::Log   : 
+                            if (logFunc_) logFunc_(ss_.str().c_str()); 
+                            break;
+                        case Level::Error : 
+                            if (errFunc_) errFunc_(ss_.str().c_str()); 
+                            break;
                     }
                 }
                 break;
@@ -119,6 +123,7 @@ public:
     }
 
 private:
+    static bool isInitialized_;
     static Mode mode_;
     static std::ofstream fs_;
     static std::ostringstream ss_;
diff --git a/Plugins/uDesktopDuplication/uDesktopDuplication/main.cpp b/Plugins/uDesktopDuplication/uDesktopDuplication/main.cpp
index 6b4f667..8402c8b 100644
--- a/Plugins/uDesktopDuplication/uDesktopDuplication/main.cpp
+++ b/Plugins/uDesktopDuplication/uDesktopDuplication/main.cpp
@@ -25,7 +25,7 @@ std::queue<Message> g_messages;
 
 extern "C"
 {
-    UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API InitializeUDD()
+    UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API Initialize()
     {
         if (g_unity && !g_manager)
         {
@@ -34,7 +34,7 @@ extern "C"
         }
     }
 
-    UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API FinalizeUDD()
+    UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API Finalize()
     {
         if (!g_manager) return;
 
@@ -52,12 +52,12 @@ extern "C"
         {
             case kUnityGfxDeviceEventInitialize:
             {
-                InitializeUDD();
+                Initialize();
                 break;
             }
             case kUnityGfxDeviceEventShutdown:
             {
-                FinalizeUDD();
+                Finalize();
                 break;
             }
         }
@@ -66,8 +66,6 @@ extern "C"
     UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API UnityPluginLoad(IUnityInterfaces* unityInterfaces)
     {
         g_unity = unityInterfaces;
-        InitializeUDD();
-
         auto unityGraphics = g_unity->Get<IUnityGraphics>();
         unityGraphics->RegisterDeviceEventCallback(OnGraphicsDeviceEvent);
     }
@@ -76,8 +74,6 @@ extern "C"
     {
         auto unityGraphics = g_unity->Get<IUnityGraphics>();
         unityGraphics->UnregisterDeviceEventCallback(OnGraphicsDeviceEvent);
-
-        FinalizeUDD();
         g_unity = nullptr;
     }