Index: trunk/ppStack/src/ppStackCleanup.c
===================================================================
--- trunk/ppStack/src/ppStackCleanup.c	(revision 26184)
+++ trunk/ppStack/src/ppStackCleanup.c	(revision 27004)
@@ -50,5 +50,5 @@
         if (!pmReadoutRebin(ro1, options->outRO, maskValue, bin1, bin1) ||
             !pmReadoutRebin(ro2, ro1, 0, bin2, bin2)) {
-            psError(PS_ERR_UNKNOWN, false, "Unable to bin output.");
+            psError(PPSTACK_ERR_DATA, false, "Unable to bin output.");
             psFree(ro1);
             psFree(ro2);