diff -u -r1.9 -r1.10
--- SimCalorimeterHitProcessor.cpp	14 Apr 2010 22:33:46 -0000	1.9
+++ SimCalorimeterHitProcessor.cpp	5 May 2010 22:15:56 -0000	1.10
@@ -65,8 +65,6 @@

         const std::string& collectionName = xsubdet.m_collection;
         IDDecoder* decoder = xsubdet.m_decoder;
 

-        //std::cout << "looking up collection: " << collectionName << std::endl;
-

         LCCollection* simCalHits = event->getCollection(collectionName);
         LCCollection* calHits = new LCCollectionVec(EVENT::LCIO::CALORIMETERHIT);        
 

@@ -86,6 +84,8 @@

             // Create a new, empty CalorimeterHit.
             CalorimeterHitImpl* calHit = new CalorimeterHitImpl;
 

+            //std::cout << "nmcp = " << simCalHit->getNMCParticles() << std::endl;
+

             // Get the 32-bit chunks of the id.
             int cellId0 = simCalHit->getCellID0();
             int cellId1 = simCalHit->getCellID1();

@@ -122,6 +122,9 @@

             calHits->addElement(calHit);            
         }                
 

+        // Set the ReadoutName parameter for LCSim to find the correct IDDecoder.
+        calHits->parameters().setValue("ReadoutName", collectionName);
+

         // Add the CalorimeterHits to the event with the collection name the same as the calorimeter type, e.g. EM_BARREL.
         event->addCollection(calHits, (*iter));
     }