Index: trunk/MagicSoft/Mars/Changelog
===================================================================
--- trunk/MagicSoft/Mars/Changelog	(revision 7994)
+++ trunk/MagicSoft/Mars/Changelog	(revision 7995)
@@ -90,4 +90,7 @@
      - removed the tab with the number of muons after cuts
      - allow a dataset as last argument
+
+   * mfileio/MReadMarsFile.cc:
+     - improved output in case something is wrong with the run-header
 
 
Index: trunk/MagicSoft/Mars/mfileio/MReadMarsFile.cc
===================================================================
--- trunk/MagicSoft/Mars/mfileio/MReadMarsFile.cc	(revision 7994)
+++ trunk/MagicSoft/Mars/mfileio/MReadMarsFile.cc	(revision 7995)
@@ -195,6 +195,13 @@
     if (rawheader && runtype!=0xffff && runtype != rawheader->GetRunType())
     {
-        *fLog << warn << "Warning - You are mixing files with different run types (";
+        *fLog << warn << "WARNING - You are mixing files with different run types (";
         *fLog << runtype << ", " << rawheader->GetRunType() << ")" << endl;
+    }
+
+    if (!rawheader->IsValid())
+    {
+        *fLog << warn << "WARNING - The run header read from the file is invalid." << endl;
+        *fLog << "          Please check if the file contents are ok." << endl;
+        rawheader->Print("header");
     }
 
@@ -204,5 +211,5 @@
         if (mcheader->GetCamVersion()==50)
         {
-            *fLog << warn << "Warning - You are using a file created with Camera 0.5." << endl;
+            *fLog << warn << "WARNING - You are using a file created with Camera 0.5." << endl;
             *fLog << "In this camera version some events have undefined Impact-Values" << endl;
             *fLog << "(MMcEvt::fImpact) Please don't use it for MC studies using the" << endl;