From ac6623aa3286ba3cb40355a94ec4bb1a4c86312e Mon Sep 17 00:00:00 2001
From: kruland2607 <kruland2607@github.com>
Date: Mon, 23 Sep 2013 10:18:49 -0500
Subject: [PATCH] Fix for Issue #143.  Null pointer in warnings dialog when
 there is no simulation data.

---
 .../sf/openrocket/gui/simulation/SimulationWarningDialog.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/net/sf/openrocket/gui/simulation/SimulationWarningDialog.java b/core/src/net/sf/openrocket/gui/simulation/SimulationWarningDialog.java
index 45a9bfa80..d9625cb17 100644
--- a/core/src/net/sf/openrocket/gui/simulation/SimulationWarningDialog.java
+++ b/core/src/net/sf/openrocket/gui/simulation/SimulationWarningDialog.java
@@ -17,7 +17,7 @@ public class SimulationWarningDialog {
 	
 	public static void showWarningDialog(Component parent, Simulation simulation) {
 		
-		if (simulation.getSimulatedWarnings().size() > 0) {
+		if (simulation.getSimulatedWarnings() != null && simulation.getSimulatedWarnings().size() > 0) {
 			ArrayList<String> messages = new ArrayList<String>();
 			messages.add(trans.get("SimuRunDlg.msg.errorOccurred"));
 			for (Warning m : simulation.getSimulatedWarnings()) {