Added Protection and Error Message for missing Output Tree

diff --git a/ANALYSIS/AliAnalysisTaskESDfilter.cxx b/ANALYSIS/AliAnalysisTaskESDfilter.cxx
index 8084626ed0ac38f0bed1c2c29f21c34449c46035..b061b04066bb4faf9751128a755286ab2b89dc30 100644 (file)
--- a/ANALYSIS/AliAnalysisTaskESDfilter.cxx
+++ b/ANALYSIS/AliAnalysisTaskESDfilter.cxx
@@ -78,7 +78,12 @@ void AliAnalysisTaskESDfilter::UserCreateOutputObjects()
   //\r
   // Create Output Objects conenct filter to outputtree\r
   // \r
+  if(OutputTree()){\r
     OutputTree()->GetUserInfo()->Add(fTrackFilter);\r
+  }\r
+  else{\r
+    AliError("No OutputTree() for adding the track filter");\r
+  }\r
 }\r
 \r
 void AliAnalysisTaskESDfilter::Init()\r