Index: trunk/Ohana/src/opihi/dvo/dbStackOps.c
===================================================================
--- trunk/Ohana/src/opihi/dvo/dbStackOps.c	(revision 13479)
+++ trunk/Ohana/src/opihi/dvo/dbStackOps.c	(revision 14191)
@@ -10,4 +10,6 @@
 
   int i;
+
+  if (stack == NULL) return;
 
   for (i = 0; i < Nstack; i++) {