Index: trunk/MagicSoft/Mars/mcalib/MCalibrate.cc
===================================================================
--- trunk/MagicSoft/Mars/mcalib/MCalibrate.cc	(revision 2893)
+++ trunk/MagicSoft/Mars/mcalib/MCalibrate.cc	(revision 2896)
@@ -85,19 +85,19 @@
 Int_t MCalibrate::PreProcess(MParList *pList)
 {
-    fSignals = (MExtractedSignalCam*)pList->FindObject("MExtractedSignalCam");
+    fSignals = (MExtractedSignalCam*)pList->FindObject(AddSerialNumber("MExtractedSignalCam"));
     if (!fSignals)
     {
-        *fLog << err << "MExtractedSignalCam not found ... aborting" << endl;
+      *fLog << err << AddSerialNumber("MExtractedSignalCam") << " not found ... aborting" << endl;
         return kFALSE;
     }
 
-    fCalibrations = (MCalibrationCam*)pList->FindObject("MCalibrationCam");
+    fCalibrations = (MCalibrationCam*)pList->FindObject(AddSerialNumber("MCalibrationCam"));
     if (!fCalibrations)
     {
-        *fLog << err << "MCalibrationCam not found ... aborting." << endl;
+      *fLog << err << AddSerialNumber("MCalibrationCam") << " not found ... aborting." << endl;
         return kFALSE;
     }
 
-    fCerPhotEvt = (MCerPhotEvt*)pList->FindCreateObj("MCerPhotEvt");
+    fCerPhotEvt = (MCerPhotEvt*)pList->FindCreateObj(AddSerialNumber("MCerPhotEvt"));
     if (!fCerPhotEvt)
         return kFALSE;