From 5ee49ddcf50bd2d96aeb9e41b74b4230d1e8474a Mon Sep 17 00:00:00 2001
From: Tim Young <Tim.Young@LightSys.org>
Date: Sun, 6 Sep 2015 09:15:39 -0500
Subject: [PATCH] Fix bug that causes crash when nothing is double-clicked

---
 EduNetworkBuilder/NetworkBuilder.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/EduNetworkBuilder/NetworkBuilder.cs b/EduNetworkBuilder/NetworkBuilder.cs
index f2796dc..827639b 100644
--- a/EduNetworkBuilder/NetworkBuilder.cs
+++ b/EduNetworkBuilder/NetworkBuilder.cs
@@ -628,6 +628,7 @@ namespace EduNetworkBuilder
 
         private void pbNetworkView_Edit_Click(object sender, EventArgs e)
         {
+            if (ItemClickedOn == null) return;
             if (ItemClickedOn.GetNetType() == NetworkComponentType.microwave || ItemClickedOn.GetNetType() == NetworkComponentType.fluorescent)
                 return;
             if (ItemClickedOn != null)