Index: trunk/psModules/src/imcombine/pmSubtractionStamps.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtractionStamps.c	(revision 21363)
+++ trunk/psModules/src/imcombine/pmSubtractionStamps.c	(revision 23688)
@@ -20,5 +20,5 @@
 #include "pmModel.h"
 #include "pmSource.h"
-
+#include "pmErrorCodes.h"
 
 #include "pmSubtraction.h"
@@ -355,4 +355,5 @@
     if (numGood == 0 && numFound == 0) {
         // No good stamps
+        psError(PM_ERR_STAMPS, true, "Unable to find suitable stamps");
         psFree(stamps);
         return NULL;