From 15e00926992081e0d06b2dd4dc98aab1eff12285 Mon Sep 17 00:00:00 2001
From: Tim Young <tim.young@lightsys.org>
Date: Thu, 10 Aug 2017 15:35:56 -0500
Subject: [PATCH] Fix a potential null reference bug

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

diff --git a/EduNetworkBuilder/PersonProfileForm.cs b/EduNetworkBuilder/PersonProfileForm.cs
index 3e35917..9b61743 100644
--- a/EduNetworkBuilder/PersonProfileForm.cs
+++ b/EduNetworkBuilder/PersonProfileForm.cs
@@ -451,6 +451,7 @@ namespace EduNetworkBuilder
             if (tvClasswork.SelectedNode == null) return;
 
             TreeNode Node = tvClasswork.SelectedNode;
+            if (Node == null) return; //Break out to avoid exploding
 
             if (Node.Tag is SchoolworkClass)
             {