Error spawning 'cmd.exe' from VS 2005 pro, c++

For a while I have been programming with VS 2005 pro with C#, the complier works okay.

I move on into C++ to experiment with class and interface, I started off with simple hello world application. I created new project (via tutorial webpage) and use C++.

//=================================== main.cpp.
#include "stdafx.h"
#undef MessageBox
// Define our entry-point
int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                                LPSTR lpStrCmdString, int nCmdShow)
{
      // Display a managed message-box
      System::Windows::Forms::MessageBox::Show("Hello C++/CLI", "TestApp", System::Windows::Forms::MessageBoxButtons::OK);

      return 0;
}
//=================================== header file (stdafx.h)
// Common include file for Windows Platform SDK

#pragma once

// Minimum requirements
#define WINVER                  0x0400      // Top-level Windows version, common for both Windows 95/98/Me and NT-family
#define _WIN32_WINNT      0x0400      // Windows NT 4.0
#define _WIN32_WINDOWS      0x0410  // Windows 98
#define _WIN32_IE            0x0400      // Internet Explorer 4.0

#define WIN32_LEAN_AND_MEAN            // Exclude rarely-used stuff from Windows headers

// Windows Header Files:
#include <windows.h>
//=====================================Error message during debug

During debug process, it came up with error:-

Error spawning 'cmd.exe'

//=====================================BuildLog

Build Log
Build started: Project: Hello_CLI, Configuration: Debug|Win32
Command Lines
Creating temporary file "c:\VS2005\CPlusPlus\Hello_CLI\Hello_CLI\Debug\RSP00000330564928.rsp" with contents
[
/outputresource:"..\debug\Hello_CLI.exe;#1" /manifest
.\Debug\Hello_CLI.exe.intermediate.manifest
]
Creating command line "mt.exe @c:\VS2005\CPlusPlus\Hello_CLI\Hello_CLI\Debug\RSP00000330564928.rsp /nologo"
Creating temporary file "c:\VS2005\CPlusPlus\Hello_CLI\Hello_CLI\Debug\BAT00000430564928.bat" with contents
[
@echo Manifest resource last updated at %TIME% on %DATE% > .\Debug\mt.dep
]
Creating command line "c:\VS2005\CPlusPlus\Hello_CLI\Hello_CLI\Debug\BAT00000430564928.bat"
Output Window
Embedding manifest...
Project : error PRJ0003 : Error spawning 'cmd.exe'.
Results
Build log was saved at "file://c:\VS2005\CPlusPlus\Hello_CLI\Hello_CLI\Debug\BuildLog.htm"
Hello_CLI - 1 error(s), 0 warning(s)
//============================================

Now I investigated on internet and could make sense out of it. No lucks

I tried other program and it come with similar error...C++ is not working at all(!).