I am facing a problem in using VIX api clone function with c#

Hello ,

I am  facing a problem in using  VIX api   clone function with c# following is the sample code and the  exception  i am facing o can ssome help me by telling me whatz wrong with the code

-

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using VIX;

using Vestris.VMWareLib;

namespace ConsoleApplication10

{

    class Program

    {

        static void Main(string[] args)

        {

            VIX.Host kl = VIX.VixCOMWrapper.Instance.Connect(VIX.Enums.VIX_SERVICEPROVIDER.VMWARE_WORKSTATION, "", 0, "", "");

            VIX.VM vm = kl.OpenVM(@"E:\VMWares-xji\WIN2K3\Windows Server 2003 Standard Edition.vmx");

                    try

                    {

                        vm.Clone(VIX.Enums.VIX_CLONETYPE.FULL, "E:
VMWares-xji
clonedvm
kljh.vmx");

                        Console.WriteLine("clone taken");

                        Console.ReadLine();

                    }

                    catch (Exception e)

                    {

                        Console.WriteLine(e.ToString ());

                        Console.ReadLine();

                    }

                }

        }

    }

and the exception

-

System.NullReferenceException: Object reference not set to an instance of an obj

ect.

   at VIX.VM.Clone(Snapshot snapshot, VIX_CLONETYPE cloneType, String destConfig

PathName)

   at VIX.VM.Clone(VIX_CLONETYPE cloneType, String destConfigPathName)

   at ConsoleApplication10.Program.Main(String[] args) in C:\Users\MAI\Documents

\Visual Studio 2008\Projects\ConsoleApplication10\ConsoleApplication10\Program.c

s:line 21