Index: trunk/MagicSoft/Mars/mjobs/MJCalibration.cc
===================================================================
--- trunk/MagicSoft/Mars/mjobs/MJCalibration.cc	(revision 4168)
+++ trunk/MagicSoft/Mars/mjobs/MJCalibration.cc	(revision 4169)
@@ -1091,9 +1091,11 @@
     }
   
-  if (fRelTimeCam.Read()<=0)
-    {
-      *fLog << err << "Unable to read MCalibrationRelTimeCam from " << fname << endl;
-      return kFALSE;
-    }
+
+  if (fRelTimes)
+    if (fRelTimeCam.Read()<=0)
+      {
+        *fLog << err << "Unable to read MCalibrationRelTimeCam from " << fname << endl;
+        return kFALSE;
+      }
   
   if (file.FindKey("MBadPixelsCam"))