Index: trunk/Ohana/src/opihi/dvo/images.c
===================================================================
--- trunk/Ohana/src/opihi/dvo/images.c	(revision 7680)
+++ trunk/Ohana/src/opihi/dvo/images.c	(revision 7917)
@@ -26,10 +26,10 @@
     remove_argument (N, &argc, argv);
     if (!str_to_time (argv[N], &tzero)) { 
-      fprintf (stderr, "syntax error\n");
+      gprint (GP_ERR, "syntax error\n");
       return (FALSE);
     }
     remove_argument (N, &argc, argv);
     if (!str_to_dtime (argv[N], &trange)) { 
-      fprintf (stderr, "syntax error\n");
+      gprint (GP_ERR, "syntax error\n");
       return (FALSE);
     }
@@ -44,10 +44,10 @@
     remove_argument (N, &argc, argv);
     if (!str_to_time (argv[N], &tzero)) { 
-      fprintf (stderr, "syntax error\n");
+      gprint (GP_ERR, "syntax error\n");
       return (FALSE);
     }
     remove_argument (N, &argc, argv);
     if (!str_to_time (argv[N], &tend)) { 
-      fprintf (stderr, "syntax error\n");
+      gprint (GP_ERR, "syntax error\n");
       return (FALSE);
     }
@@ -62,5 +62,5 @@
  
   if (argc != 1) {
-    fprintf (stderr, "USAGE: image [-time start range]\n");
+    gprint (GP_ERR, "USAGE: image [-time start range]\n");
     return (FALSE);
   }
@@ -143,5 +143,5 @@
   }
 
-  fprintf (stderr, "plotting %d images\n", N/8);
+  gprint (GP_ERR, "plotting %d images\n", N/8);
   Xvec.Nelements = Xvec.Nelements = N;
   if (N > 0) {