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;

 	}

 }