diff -u -r1.6 -r1.7
--- ParticleHelixProducer.java	20 Oct 2012 10:07:04 -0000	1.6
+++ ParticleHelixProducer.java	9 Nov 2012 01:46:50 -0000	1.7
@@ -32,6 +32,7 @@

 /**
  *
  * @author phansson

+ * @version $Id: ParticleHelixProducer.java,v 1.7 2012/11/09 01:46:50 omoreno Exp $

  */
 public class ParticleHelixProducer extends Driver {
     

@@ -241,16 +242,13 @@

         }
         else {
             System.out.println(this.getClass().getSimpleName() + ": no MC particles in this event");

+            return;

         }
         
         if(debug) System.out.println(this.getClass().getSimpleName() + ": created " + tracks.size() + " MC particle helix tracks");
         

-        // event.put(this.trackOutputCollectionName, tracks, HelicalTrackFit.class, 0);
-        event.put(this.trackOutputCollectionName, tracks, HpsHelicalTrackFit.class, 0);
-        _totalTracks += tracks.size();
-        
-        
-        

+            event.put(this.trackOutputCollectionName, tracks, HpsHelicalTrackFit.class, 0);
+            _totalTracks += tracks.size();

     }
     
     /**