Index: trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc
===================================================================
--- trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc	(revision 8383)
+++ trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc	(revision 8434)
@@ -138,9 +138,13 @@
     fPixAssignment = new MArrayS(0);
 
+    // Remark: If we read old MC data from a root file which do not
+    // yet contain one of these variable, the value given here is
+    // the default. Do not mix files with and without a value if the
+    // files with the value do not match the default!
     fFormatVersion=0;
     fSoftVersion=0;
-    fTelescopeNumber=0;
-    fCameraVersion=0;
-    fFadcType = 0;
+    fTelescopeNumber=1;
+    fCameraVersion=1;
+    fFadcType=0;
     fRunType=kRTNone;  // use 0xffff for invalidation, 0 means: Data run
     fRunNumber=0;
@@ -155,4 +159,7 @@
     fNumSamplesHiGain=0;
     fNumEvents=0;
+    fNumBytesPerSample=1;
+    fFreqSampling=300;
+    fNumSignificantBits=8;
 }