Index: trunk/psModules/src/imcombine/pmSubtractionMatch.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtractionMatch.c	(revision 20049)
+++ trunk/psModules/src/imcombine/pmSubtractionMatch.c	(revision 20465)
@@ -248,5 +248,5 @@
 
             if (sources) {
-                stamps = pmSubtractionStampsSetFromSources(sources, subMask, region, footprint,
+                stamps = pmSubtractionStampsSetFromSources(sources, ro1->image, subMask, region, footprint,
                                                            stampSpacing, subMode);
             } else if (stampsName && strlen(stampsName) > 0) {