diff --git a/pykd_bootstrapper/pykd_bootstrapper_vc120.vcxproj b/pykd_bootstrapper/pykd_bootstrapper_vc120.vcxproj
index 8cdac4b..7a67a73 100644
--- a/pykd_bootstrapper/pykd_bootstrapper_vc120.vcxproj
+++ b/pykd_bootstrapper/pykd_bootstrapper_vc120.vcxproj
@@ -169,8 +169,10 @@
     <Text Include="ReadMe.txt" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="resource.h" />
     <ClInclude Include="stdafx.h" />
     <ClInclude Include="targetver.h" />
+    <ClInclude Include="version.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="dllmain.cpp">
@@ -204,6 +206,9 @@
       <Project>{3e9c538f-f060-4e86-ab7d-d44439615b63}</Project>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="version.rc" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
     <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
diff --git a/pykd_bootstrapper/pykd_bootstrapper_vc120.vcxproj.filters b/pykd_bootstrapper/pykd_bootstrapper_vc120.vcxproj.filters
index 85fe9fa..d7e05bd 100644
--- a/pykd_bootstrapper/pykd_bootstrapper_vc120.vcxproj.filters
+++ b/pykd_bootstrapper/pykd_bootstrapper_vc120.vcxproj.filters
@@ -24,6 +24,12 @@
     <ClInclude Include="targetver.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="resource.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="version.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="stdafx.cpp">
@@ -126,4 +132,9 @@
     </None>
     <None Include="packages.pykd_bootstrapper_vc120.config" />
   </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="version.rc">
+      <Filter>Resource Files</Filter>
+    </ResourceCompile>
+  </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/pykd_bootstrapper/resource.h b/pykd_bootstrapper/resource.h
new file mode 100644
index 0000000..c3bc570
--- /dev/null
+++ b/pykd_bootstrapper/resource.h
@@ -0,0 +1,14 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by version.rc
+
+// Next default values for new objects
+// 
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        101
+#define _APS_NEXT_COMMAND_VALUE         40001
+#define _APS_NEXT_CONTROL_VALUE         1001
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif
diff --git a/pykd_bootstrapper/version.h b/pykd_bootstrapper/version.h
new file mode 100644
index 0000000..20cf500
--- /dev/null
+++ b/pykd_bootstrapper/version.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#define PYKDEXT_VERSION_MAJOR      1
+#define PYKDEXT_VERSION_MINOR      0
+#define PYKDEXT_VERSION_SUBVERSION 1
+#define PYKDEXT_VERSION_BUILDNO    2
+
+#define __VER_STR2__(x) #x
+#define __VER_STR1__(x) __VER_STR2__(x)
+
+#define PYKDEXT_VERSION_BUILD_COMMA    PYKDEXT_VERSION_MAJOR, PYKDEXT_VERSION_MINOR, PYKDEXT_VERSION_SUBVERSION, PYKDEXT_VERSION_BUILDNO
+#define PYKDEXT_VERSION_BUILD          PYKDEXT_VERSION_MAJOR.PYKDEXT_VERSION_MINOR.PYKDEXT_VERSION_SUBVERSION.PYKDEXT_VERSION_BUILDNO
+
+#define PYKDEXT_VERSION_BUILD_STR_COMMA    __VER_STR1__(PYKDEXT_VERSION_BUILD_COMMA)
+#define PYKDEXT_VERSION_BUILD_STR          __VER_STR1__(PYKDEXT_VERSION_BUILD)
diff --git a/pykd_bootstrapper/version.rc b/pykd_bootstrapper/version.rc
new file mode 100644
index 0000000..d21dc69
Binary files /dev/null and b/pykd_bootstrapper/version.rc differ
diff --git a/pykd_bootstrapper/windbgext.cpp b/pykd_bootstrapper/windbgext.cpp
index 98b7d15..db7bf28 100644
--- a/pykd_bootstrapper/windbgext.cpp
+++ b/pykd_bootstrapper/windbgext.cpp
@@ -172,6 +172,14 @@ KDLIB_EXT_COMMAND_METHOD_IMPL(PykdBootsTrapper, py)
 
     PyEval_RestoreThread(m_pyState);
 
+    python::handle<>  pykdHandle(python::allow_null(PyImport_ImportModule("pykd")));
+    if (!pykdHandle)
+    {
+        m_pyState = PyEval_SaveThread();
+        kdlib::eprintln(L"Pykd package is not installed. You can install it by command \"!pykd.install\"");
+        return;
+    }
+
     std::string  scriptFileName;
     if (args.size() > 0)
     {
@@ -179,6 +187,7 @@ KDLIB_EXT_COMMAND_METHOD_IMPL(PykdBootsTrapper, py)
 
         if (scriptFileName.empty())
         {
+            m_pyState = PyEval_SaveThread();
             kdlib::eprintln(L"script file not found");
             return;
         }
@@ -351,12 +360,6 @@ void PykdBootsTrapper::setUp()
         .def("readline", &::DbgIn::readline)
         .add_property("encoding", &::DbgIn::encoding);
 
-    python::object       sys = python::import("sys");
-
-    sys.attr("stdout") = python::object(::DbgOut());
-    sys.attr("stderr") = python::object(::DbgOut());
-    sys.attr("stdin") = python::object(::DbgIn());
-
     m_pyState = PyEval_SaveThread();
 }