Getting nullreference exception

can any body help me plzz....whe i try to run the above code...getting an error...object reference not set to an instance of an object.....
platform...microsoft visual studio 2005...i am trying to run this class library in nunit..

this is desktop GUI application...

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Forms;
using NUnit.Framework;
using QAliber.Engine;
using QAliber.Engine.Controls;
using QAliber.Engine.Controls.UIA;
using QAliber.Engine.Controls.Web;
using QAliber.Engine.Controls.WPF;
using QAliber.Logger;
using QAliber.TestModel;
using QAliber.RemotingModel;
using System.IO;

namespace ClassLibrary15
{
  public class Class1
  {
 

  [Test]
  #region Temporary Recording Code
  public static void RecordedTest1()
  {
 
 
  UIAEditBox uiaeditbox0 =Desktop.UIA[@"Business Suite", @"TfrmMain", @"UIAWindow"][@"Login", @"tLogin", @"UIAWindow"][@"UIAPane", 1][@"UIAEditBox", 1] as UIAEditBox;
 
  uiaeditbox0.Click(MouseButtons.Left, new Point(78, 12));
  uiaeditbox0.Write("demo{D1}{D2}{D3}");
  UIAButton login2 = Desktop.UIA[@"Business Suite", @"TfrmMain", @"UIAWindow"][@"Login", @"tLogin", @"UIAWindow"][@"UIAPane", 0][@"Login", @"TBitBtn", @"UIAButton"] as UIAButton;
  // login2 = new login2();
  login2.Click(MouseButtons.Left, new Point(42, 18));
  UIAPane uiapane3 = Desktop.UIA[@"Business Suite - Back Office - Sample Demo and Training Company", @"TfrmMain", @"UIAWindow"][@"UIAPane", 0][@"UIAPane", 0] as UIAPane;
  // uiapane3 = new uiapane3();
  uiapane3.Click(MouseButtons.Left, new Point(27, 30));
  UIAButton close4 = Desktop.UIA[@"Business Suite - Back Office - Sample Demo and Training Company", @"TfrmMain", @"UIAWindow"][@"Business Suite - Back Office - Sample Demo and Training Company", @"", @"TitleBar"][@"Close", @"", @"Close"] as UIAButton;
  // close4 = new close4();
  close4.Click(MouseButtons.Left, new Point(12, 4));
  UIAButton yes5 = Desktop.UIA[@"Confirm", @"TMessageForm", @"UIAWindow"][@"Yes", @"TButton", @"UIAButton"] as UIAButton;
  // yes5 = new yes5();
  yes5.Click(MouseButtons.Left, new Point(65, 6));

  }
  #endregion
  }
}