From 260d4361562285e5b8d854d96f6a97ca86fd76a6 Mon Sep 17 00:00:00 2001
From: peabody124 <peabody124>
Date: Tue, 31 Aug 2010 02:11:19 +0000
Subject: [PATCH] GCS/Scope: Small bug that prevented adding traces when none
 exist

git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1475 ebee16cc-31ac-478f-84a7-5cbb03baadba
---
 ground/src/plugins/scope/scopegadgetoptionspage.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ground/src/plugins/scope/scopegadgetoptionspage.cpp b/ground/src/plugins/scope/scopegadgetoptionspage.cpp
index ad14d65c1..29b4d5a74 100644
--- a/ground/src/plugins/scope/scopegadgetoptionspage.cpp
+++ b/ground/src/plugins/scope/scopegadgetoptionspage.cpp
@@ -244,7 +244,8 @@ void ScopeGadgetOptionsPage::on_btnAddCurve_clicked()
 
     //Find an existing plot curve config based on the uavobject and uav field. If it
     //exists, update it, else add a new one.
-    if(options_page->lstCurves->currentItem()->text() == uavObject + "." + uavField)
+    if(options_page->lstCurves->count() &&
+       options_page->lstCurves->currentItem()->text() == uavObject + "." + uavField)
     {
         QListWidgetItem *listWidgetItem = options_page->lstCurves->currentItem();
         setCurvePlotProperties(listWidgetItem,uavObject,uavField,scale,varColor);