Index: /branches/eam_branches/ipp-20131211/Ohana/src/addstar/src/findskycell.c
===================================================================
--- /branches/eam_branches/ipp-20131211/Ohana/src/addstar/src/findskycell.c	(revision 36472)
+++ /branches/eam_branches/ipp-20131211/Ohana/src/addstar/src/findskycell.c	(revision 36473)
@@ -490,4 +490,9 @@
   }
 
+  if (!BASENAME) {
+    fprintf (stderr, "ERROR: need to define BASENAME -basename (name) (proj_offset) (skycell_offset)\n");
+    exit (2);
+  }
+
   char imagefile[DVO_MAX_PATH];
   snprintf (imagefile, DVO_MAX_PATH, "%s/Images.dat", catdir);