Index: trunk/MagicSoft/Mars/mfileio/MReadReports.cc
===================================================================
--- trunk/MagicSoft/Mars/mfileio/MReadReports.cc	(revision 3199)
+++ trunk/MagicSoft/Mars/mfileio/MReadReports.cc	(revision 3226)
@@ -205,4 +205,11 @@
         }
 
+        if (tree->GetEntries()==0)
+        {
+            *fLog << warn << "No events in tree '" << tree->GetName() << "'... skipped." << endl;
+            fTrees->RemoveFromList(tree);
+            continue;
+        }
+
         TString tn(tree->GetTitle());
         if (tn.IsNull())