diff --git a/WelsonJS.Toolkit.dll b/WelsonJS.Toolkit.dll
index 4ea8d7b..66687d8 100644
Binary files a/WelsonJS.Toolkit.dll and b/WelsonJS.Toolkit.dll differ
diff --git a/WelsonJS.Toolkit/WelsonJS.Toolkit/NamedSharedMemory.cs b/WelsonJS.Toolkit/WelsonJS.Toolkit/NamedSharedMemory.cs
index c64f585..9ed39ca 100644
--- a/WelsonJS.Toolkit/WelsonJS.Toolkit/NamedSharedMemory.cs
+++ b/WelsonJS.Toolkit/WelsonJS.Toolkit/NamedSharedMemory.cs
@@ -30,7 +30,7 @@ namespace WelsonJS
         private IntPtr hFile;
         private IntPtr hFileMappingObject;
         private string lpName;
-        private static Dictionary<string, NamedSharedMemory> memDict;
+        private static Dictionary<string, NamedSharedMemory> memDict = new Dictionary<string, NamedSharedMemory>();
 
         [Flags]
         public enum FileProtection : uint
diff --git a/WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs b/WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs
index 466dcde..7386947 100644
--- a/WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs
+++ b/WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs
@@ -29,7 +29,6 @@
  */
 
 using System;
-using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Windows.Forms;