From c68728637ee063231648aec9b9ab687db51a2ff5 Mon Sep 17 00:00:00 2001
From: asl <asl@opencascade.com>
Date: Fri, 10 Nov 2017 13:48:13 +0300
Subject: [PATCH] patch for crash

---
 src/HYDROGUI/HYDROGUI_ProfileDlg.cxx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/HYDROGUI/HYDROGUI_ProfileDlg.cxx b/src/HYDROGUI/HYDROGUI_ProfileDlg.cxx
index 92559c7b..239645b4 100644
--- a/src/HYDROGUI/HYDROGUI_ProfileDlg.cxx
+++ b/src/HYDROGUI/HYDROGUI_ProfileDlg.cxx
@@ -313,7 +313,12 @@ void HYDROGUI_ProfileDlg::SwitchToProfile(int theIndex)
         anAISObject->SetWidth(1);
     }
   }
-  (*myProfilesPointer)[0]->getDisplayer()->Update();
+
+  if( myProfilesPointer && 
+      myProfilesPointer->size()>0 && 
+      myProfilesPointer->at(0) && 
+      myProfilesPointer->at(0)->getDisplayer() )
+    myProfilesPointer->at(0)->getDisplayer()->Update();
 }
 
 void HYDROGUI_ProfileDlg::onAddBtnPressed(bool)
-- 
2.39.2