diff -u -r1.11 -r1.12
--- BaseReconstructedParticle.java	18 Sep 2007 03:48:01 -0000	1.11
+++ BaseReconstructedParticle.java	14 Apr 2011 05:02:26 -0000	1.12
@@ -17,7 +17,7 @@

 /**
  * Default implementation of ReconstructedParticle
  * @author Norman Graf

- * @version $Id: BaseReconstructedParticle.java,v 1.11 2007/09/18 03:48:01 tonyj Exp $

+ * @version $Id: BaseReconstructedParticle.java,v 1.12 2011/04/14 05:02:26 grefe Exp $

  * Change setParticleIdUsed to check that ParticleID is in the ParticleID list,
  * and if not add it.
  *                    Ron Cassell

@@ -288,7 +288,13 @@

         String className = getClass().getName();
         int lastDot = className.lastIndexOf('.');
         if(lastDot!=-1)className = className.substring(lastDot+1);

-        StringBuffer sb = new StringBuffer(className+": Type: "+_type+" pdgID: "+_particleIdUsed.getPDG()+" \n");

+        String pidUsed = "";
+        try {
+        	pidUsed = String.valueOf(_particleIdUsed.getPDG());
+        } catch (NullPointerException e) {
+        	pidUsed = "no particle ID defined";
+        }
+        StringBuffer sb = new StringBuffer(className+": Type: "+_type+" pdgID: "+pidUsed+" \n");

         sb.append("E: "+getEnergy());
         return sb.toString();
     }