From d3815ca9ca661da2c224e67dacc65a6763aefbbd Mon Sep 17 00:00:00 2001
From: kleinb <kleinb@f7af4fe6-9843-0410-8265-dc069ae4e863>
Date: Mon, 5 Jul 2010 11:24:15 +0000
Subject: [PATCH] Added Protection and Error Message for missing Output Tree

---
 ANALYSIS/AliAnalysisTaskESDfilter.cxx | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ANALYSIS/AliAnalysisTaskESDfilter.cxx b/ANALYSIS/AliAnalysisTaskESDfilter.cxx
index 8084626ed0a..b061b04066b 100644
--- a/ANALYSIS/AliAnalysisTaskESDfilter.cxx
+++ b/ANALYSIS/AliAnalysisTaskESDfilter.cxx
@@ -78,7 +78,12 @@ void AliAnalysisTaskESDfilter::UserCreateOutputObjects()
   //
   // Create Output Objects conenct filter to outputtree
   // 
+  if(OutputTree()){
     OutputTree()->GetUserInfo()->Add(fTrackFilter);
+  }
+  else{
+    AliError("No OutputTree() for adding the track filter");
+  }
 }
 
 void AliAnalysisTaskESDfilter::Init()
-- 
2.39.3