Fixed the following issue (present only on 32-bit systems):

Version: 0.7.0.0

System.NullReferenceException: Object reference not set to an instance of an object.
at OpenHardwareMonitor.GUI.MainForm.timer_Tick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Common Language Runtime: 4.0.30319.18444
Operating System: Microsoft Windows NT 6.1.7601 Service Pack 1
Process Type: 32-Bit

/*

  This Source Code Form is subject to the terms of the Mozilla Public

  License, v. 2.0. If a copy of the MPL was not distributed with this

  file, You can obtain one at http://mozilla.org/MPL/2.0/.

  Copyright (C) 2009-2010 Michael Möller <mmoeller@openhardwaremonitor.org>

*/

namespace OpenHardwareMonitor.Hardware {

  public interface IVisitor {

    void VisitComputer(IComputer computer);

    void VisitHardware(IHardware hardware);

    void VisitSensor(ISensor sensor);

    void VisitParameter(IParameter parameter);

  }

}