Index: branches/pap/psModules/src/imcombine/pmSubtractionMatch.c
===================================================================
--- branches/pap/psModules/src/imcombine/pmSubtractionMatch.c	(revision 23511)
+++ branches/pap/psModules/src/imcombine/pmSubtractionMatch.c	(revision 23656)
@@ -18,6 +18,8 @@
 #include "pmSubtractionMask.h"
 #include "pmSubtractionThreads.h"
+#include "pmSubtractionVisual.h"
+#include "pmErrorCodes.h"
+
 #include "pmSubtractionMatch.h"
-#include "pmSubtractionVisual.h"
 
 #define BG_STAT PS_STAT_ROBUST_MEDIAN   // Statistic to use for background
@@ -73,5 +75,5 @@
                                       stampSpacing, mode);
     if (!*stamps) {
-        psError(PS_ERR_UNKNOWN, false, "Unable to find stamps.");
+        psError(psErrorCodeLast(), false, "Unable to find stamps.");
         return false;
     }