From 85ae3e03c200c02fff40d42a865e06ad26de8ec3 Mon Sep 17 00:00:00 2001
From: Kathy <kruffing@volian.com>
Date: Thu, 13 Jan 2022 14:29:21 +0000
Subject: [PATCH] B2021-122: Crash on expand of search panel/select of RNO Only
 with nothing in editor

---
 PROMS/Volian.Controls.Library/DisplaySearch.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/PROMS/Volian.Controls.Library/DisplaySearch.cs b/PROMS/Volian.Controls.Library/DisplaySearch.cs
index 38de36b7..aeab9940 100644
--- a/PROMS/Volian.Controls.Library/DisplaySearch.cs
+++ b/PROMS/Volian.Controls.Library/DisplaySearch.cs
@@ -2183,6 +2183,9 @@ namespace Volian.Controls.Library
 			// B2021 - 100: Enable / disable the RNO Only checkbox &WORD Sections tree node in Step Elements to Search.
 			if (tabSearchTypes.SelectedTab == tabTranSearch) return;
 
+			// B2021-122: null reference crash if clicking RNOOnly before anything else, i.e. tree set up with types.
+			if (wordSectionTreeNode == null) return;
+
 			wordSectionTreeNode.Enabled = true;
 			if (!cbxRnoOnly.Checked)    // checked turning on
 			{