From 92dcd8981dc68067c808c8289837ed061b237361 Mon Sep 17 00:00:00 2001
From: David Sparer <David.Sparer@pearson.com>
Date: Mon, 20 Jun 2016 12:51:25 -0600
Subject: [PATCH] Fixed bug with Help window where clicking a treenode that
 does not have a .html file associated with it would produce an error.

---
 mRemoteV1/UI/Window/HelpWindow.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mRemoteV1/UI/Window/HelpWindow.cs b/mRemoteV1/UI/Window/HelpWindow.cs
index 8e3d2c66..b586374b 100644
--- a/mRemoteV1/UI/Window/HelpWindow.cs
+++ b/mRemoteV1/UI/Window/HelpWindow.cs
@@ -246,7 +246,7 @@ namespace mRemoteNG.UI.Window
 				
 		private void tvIndex_AfterSelect(Object sender, TreeViewEventArgs e)
 		{
-			if (((string)e.Node.Tag) != "")
+			if (((string)e.Node.Tag) != "" && e.Node.Tag != null)
 			{
 				wbHelp.Navigate(GeneralAppInfo.HomePath + "\\Help\\" + Convert.ToString(e.Node.Tag) +".htm");
 			}