Index: trunk/MagicSoft/Mars/NEWS
===================================================================
--- trunk/MagicSoft/Mars/NEWS	(revision 7848)
+++ trunk/MagicSoft/Mars/NEWS	(revision 7850)
@@ -23,4 +23,7 @@
 
    - merpp: didn't recognize files with the extension .raw.gz - fixed.
+
+   - callisto: Callisto now raises an error if one of the input files could
+     not be opened.
 
    - callisto: Updated absolute calibration constants (muon calibration)