Index: trunk/Ohana/src/opihi/cmd.data/accum.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.data/accum.c	(revision 4689)
+++ trunk/Ohana/src/opihi/cmd.data/accum.c	(revision 7917)
@@ -16,6 +16,6 @@
 
   if ((argc != 6) && (argc != 7)) {
-    fprintf (stderr, "USAGE: accum <value> <vector> <key> start end [delta]\n");
-    fprintf (stderr, "  sum <value> in bins corresponding to the value of <key>\n");
+    gprint (GP_ERR, "USAGE: accum <value> <vector> <key> start end [delta]\n");
+    gprint (GP_ERR, "  sum <value> in bins corresponding to the value of <key>\n");
     return (FALSE);
   }
@@ -24,5 +24,5 @@
   if ((key = SelectVector (argv[3], OLDVECTOR, TRUE)) == NULL) return (FALSE);
   if (val[0].Nelements != key[0].Nelements) {
-    fprintf (stderr, "key and value don't match\n");
+    gprint (GP_ERR, "key and value don't match\n");
     return (FALSE);
   }
@@ -36,5 +36,5 @@
     delta = 1;
   if ((start == end) || (delta == 0)) {
-    fprintf (stderr, "error in value: %f to %f, %f\n", start, end, delta);
+    gprint (GP_ERR, "error in value: %f to %f, %f\n", start, end, delta);
     return (FALSE);
   }