diff --git a/Assets/LuaFramework/ToLua/Core/LuaState.cs b/Assets/LuaFramework/ToLua/Core/LuaState.cs
index 8019bb738..14bf84212 100644
--- a/Assets/LuaFramework/ToLua/Core/LuaState.cs
+++ b/Assets/LuaFramework/ToLua/Core/LuaState.cs
@@ -105,9 +105,9 @@ public LuaState()
                 mainState = this;
             }
 
-            float time = Time.realtimeSinceStartup;    
+            float time = Time.realtimeSinceStartup;
             InitTypeTraits();
-            InitStackTraits();        
+            InitStackTraits();
             L = LuaNewState();            
             LuaException.Init(L);
             stateMap.Add(L, this);                        
@@ -1276,6 +1276,8 @@ void PushUserData(object o, int reference)
                 {
                     return;
                 }
+
+                translator.Destroyudata(index);
             }
 
             index = translator.AddObject(o);
diff --git a/Assets/Plugins/Android/libs/armeabi-v7a/libtolua.so b/Assets/Plugins/Android/libs/armeabi-v7a/libtolua.so
index a74e3c289..0e74ac320 100644
Binary files a/Assets/Plugins/Android/libs/armeabi-v7a/libtolua.so and b/Assets/Plugins/Android/libs/armeabi-v7a/libtolua.so differ
diff --git a/Assets/Plugins/Android/libs/x86/libtolua.so b/Assets/Plugins/Android/libs/x86/libtolua.so
index 9f15c1b3e..1640f6399 100644
Binary files a/Assets/Plugins/Android/libs/x86/libtolua.so and b/Assets/Plugins/Android/libs/x86/libtolua.so differ
diff --git a/Assets/Plugins/iOS/libtolua.a b/Assets/Plugins/iOS/libtolua.a
index 57cf726c9..10c70b39b 100644
Binary files a/Assets/Plugins/iOS/libtolua.a and b/Assets/Plugins/iOS/libtolua.a differ
diff --git a/Assets/Plugins/tolua.bundle/Contents/MacOS/tolua b/Assets/Plugins/tolua.bundle/Contents/MacOS/tolua
index e7cbcdc25..fc919705b 100644
Binary files a/Assets/Plugins/tolua.bundle/Contents/MacOS/tolua and b/Assets/Plugins/tolua.bundle/Contents/MacOS/tolua differ
diff --git a/Assets/Plugins/x86/tolua.dll b/Assets/Plugins/x86/tolua.dll
index 485909d09..48a46b9dc 100644
Binary files a/Assets/Plugins/x86/tolua.dll and b/Assets/Plugins/x86/tolua.dll differ
diff --git a/Assets/Plugins/x86_64/tolua.dll b/Assets/Plugins/x86_64/tolua.dll
index 655ae5562..5d332f3ee 100644
Binary files a/Assets/Plugins/x86_64/tolua.dll and b/Assets/Plugins/x86_64/tolua.dll differ
diff --git a/Assets/Sproto.New.zip b/Assets/Sproto.New.zip
index c2adc5ee4..917ff8869 100644
Binary files a/Assets/Sproto.New.zip and b/Assets/Sproto.New.zip differ