Index: trunk/Ohana/src/opihi/cmd.astro/cgrid.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.astro/cgrid.c	(revision 30611)
+++ trunk/Ohana/src/opihi/cmd.astro/cgrid.c	(revision 34584)
@@ -279,5 +279,5 @@
   graphmode.ptype = 100; /* connect a pair */
   graphmode.etype = 0;
-  PlotVectorPair (kapa, &Xvec, &Yvec, &graphmode);
+  PlotVectorPair (kapa, &Xvec, &Yvec, NULL, &graphmode);
 
   free (Xvec.elements.Ptr);