--- DarthVader/TrackerLevel2/inc/TrkLevel1.h	2014/06/04 07:57:01	1.20
+++ DarthVader/TrackerLevel2/inc/TrkLevel1.h	2014/07/03 10:37:58	1.21
@@ -115,8 +115,8 @@
     	
     TrkLevel1();
     ~TrkLevel1(){Delete();}
-    
-    int nclstr() {return Cluster->GetEntries();}    ///< number of stored clusters
+    // EM crash when DSP status: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 
+    int nclstr() {if (Cluster) return Cluster->GetEntries(); return 0;}    ///< number of stored clusters
     
     void Dump();
 //    void SetFromLevel1Struct(cTrkLevel1 *, Bool_t);
@@ -170,7 +170,7 @@
     int  GetPFA(){ return sw_.pfaid; }
     
 
-    ClassDef(TrkLevel1,2);
+    ClassDef(TrkLevel1,3);
 
 };