Index: /trunk/Mars/fact/analysis/callisto.C
===================================================================
--- /trunk/Mars/fact/analysis/callisto.C	(revision 18145)
+++ /trunk/Mars/fact/analysis/callisto.C	(revision 18146)
@@ -1,5 +1,5 @@
 #include "MLogManip.h"
 
-int callisto(const char *seqfile="seq/2012/01/23/20120123_023.seq", const char *outpath = "output", bool delays="resources/delays-20150217.txt")
+int callisto(const char *seqfile="seq/2012/01/23/20120123_023.seq", const char *outpath = "output", const char *delays="resources/delays-20150217.txt")
 {
     // ======================================================
@@ -358,5 +358,8 @@
         TGraph g(delays);
         if (g.GetN()!=1440)
+        {
+            gLog << err << "Error reading file " << delays << endl;
             return 41;
+        }
 
         timecam.SetDelays(g);