Index: trunk/FACT++/src/EventBuilderWrapper.h
===================================================================
--- trunk/FACT++/src/EventBuilderWrapper.h	(revision 15190)
+++ trunk/FACT++/src/EventBuilderWrapper.h	(revision 15192)
@@ -152,4 +152,5 @@
         // This is now the first file which does not exist
         fRunNumber++;
+        fLastOpened = 0;
 
         // Check if we have exceeded the maximum
@@ -473,4 +474,6 @@
     void SetOutputFormat(FAD::FileFormat_t f)
     {
+        const bool changed = f!=fFileFormat;
+
         fFileFormat = f;
         fDimFileFormat.Update(uint16_t(f));
@@ -491,5 +494,6 @@
         }
 
-        fMsg.Message(msg);
+        if (changed)
+            fMsg.Message(msg);
     }