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

using System;

using System.Collections.Generic;

using System.Text;

using System.Collections;

namespace Aga.Controls.Tree

{

	public interface ITreeModel

	{

		IEnumerable GetChildren(TreePath treePath);

		bool IsLeaf(TreePath treePath);

		event EventHandler<TreeModelEventArgs> NodesChanged; 

		event EventHandler<TreeModelEventArgs> NodesInserted;

		event EventHandler<TreeModelEventArgs> NodesRemoved; 

		event EventHandler<TreePathEventArgs> StructureChanged;

	}

}