Index: /branches/eam_branches/20091201/psModules/src/imcombine/pmSubtractionEquation.c
===================================================================
--- /branches/eam_branches/20091201/psModules/src/imcombine/pmSubtractionEquation.c	(revision 26803)
+++ /branches/eam_branches/20091201/psModules/src/imcombine/pmSubtractionEquation.c	(revision 26804)
@@ -797,5 +797,5 @@
         stamp->status = PM_SUBTRACTION_STAMP_REJECTED;
         psWarning("Rejecting stamp %d (%d,%d) because of bad equation",
-                  index, (int)(stamp->x + 0.5), (int)(stamp->y + 0.5));
+                  index, (int)(stamp->x - 0.5), (int)(stamp->y - 0.5));
     } else {
         stamp->status = PM_SUBTRACTION_STAMP_USED;
@@ -1471,12 +1471,12 @@
         deviations->data.F32[i] = devNorm * deviation;
         psTrace("psModules.imcombine", 5, "Deviation for stamp %d (%d,%d): %f\n",
-                i, (int)(stamp->x + 0.5), (int)(stamp->y + 0.5), deviations->data.F32[i]);
+                i, (int)(stamp->x - 0.5), (int)(stamp->y - 0.5), deviations->data.F32[i]);
         psStringAppend(&log, "Stamp %d (%d,%d): %f\n",
-                       i, (int)(stamp->x + 0.5), (int)(stamp->y + 0.5), deviations->data.F32[i]);
+                       i, (int)(stamp->x - 0.5), (int)(stamp->y - 0.5), deviations->data.F32[i]);
         if (!isfinite(deviations->data.F32[i])) {
             stamp->status = PM_SUBTRACTION_STAMP_REJECTED;
             psTrace("psModules.imcombine", 5,
                     "Rejecting stamp %d (%d,%d) because of non-finite deviation\n",
-                    i, (int)(stamp->x + 0.5), (int)(stamp->y + 0.5));
+                    i, (int)(stamp->x - 0.5), (int)(stamp->y - 0.5));
             continue;
         }