From eb65266fe840eef063be3c31811105bcc083b064 Mon Sep 17 00:00:00 2001
From: SiboVG <sibo.vangool@hotmail.com>
Date: Sat, 25 Feb 2023 20:04:53 +0100
Subject: [PATCH] Fix import issue when sim includes booster motor, but no
 booster present

---
 .../openrocket/file/rasaero/importt/SimulationListHandler.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/src/net/sf/openrocket/file/rasaero/importt/SimulationListHandler.java b/core/src/net/sf/openrocket/file/rasaero/importt/SimulationListHandler.java
index 5d0547f79..194b63420 100644
--- a/core/src/net/sf/openrocket/file/rasaero/importt/SimulationListHandler.java
+++ b/core/src/net/sf/openrocket/file/rasaero/importt/SimulationListHandler.java
@@ -169,6 +169,9 @@ public class SimulationListHandler extends AbstractElementHandler {
 
         private void setSeparationDelay(final int stageNr, Double separationDelay,
                                         final FlightConfigurationId id) {
+            if (rocket.getStage(stageNr) == null) {
+                return;
+            }
             StageSeparationConfiguration config = rocket.getStage(stageNr).getSeparationConfigurations().get(id);
             if (separationDelay != null) {
                 config.setSeparationDelay(separationDelay);