Index: /trunk/Mars/mjobs/MJSimulation.cc
===================================================================
--- /trunk/Mars/mjobs/MJSimulation.cc	(revision 19693)
+++ /trunk/Mars/mjobs/MJSimulation.cc	(revision 19694)
@@ -541,5 +541,5 @@
         read.AddFiles(iter);
 
-    if (read.GetNumFiles()==0)
+    if (read.GetNumFiles()==0 && fOperationMode==kModeData)
     {
         *fLog << err << "No files to read." << endl;