Index: trunk/Ohana/src/opihi/dvo/procks.c
===================================================================
--- trunk/Ohana/src/opihi/dvo/procks.c	(revision 20936)
+++ trunk/Ohana/src/opihi/dvo/procks.c	(revision 34584)
@@ -113,5 +113,5 @@
   graphmode.style = 2; /* set style to points */
   graphmode.etype = 0; /* no errorbars */
-  PlotVectorPair (kapa, &Xvec, &Yvec, &graphmode);
+  PlotVectorPair (kapa, &Xvec, &Yvec, NULL, &graphmode);
 
   /* now plot vectors between two extrema */
@@ -146,5 +146,5 @@
   graphmode.etype = 0; /* no errorbars */
 
-  PlotVectorPair (kapa, &Xvec, &Yvec, &graphmode);
+  PlotVectorPair (kapa, &Xvec, &Yvec, NULL, &graphmode);
 
   free (Xvec.elements.Flt);