Index: /branches/eam_branches/20091201/psModules/src/imcombine/pmSubtractionVisual.c
===================================================================
--- /branches/eam_branches/20091201/psModules/src/imcombine/pmSubtractionVisual.c	(revision 26428)
+++ /branches/eam_branches/20091201/psModules/src/imcombine/pmSubtractionVisual.c	(revision 26429)
@@ -242,4 +242,12 @@
 
         overlay[Noverlay].type = KII_OVERLAY_BOX;
+	if ((stamp->x < 1.0) && (stamp->y < 1.0)) {
+	    fprintf (stderr, "stamp zero: %f %f\n", stamp->x, stamp->y);
+	    continue;
+	}
+	if (!isfinite(stamp->x) && !isfinite(stamp->y)) {
+	    fprintf (stderr, "stamp nan: %f %f\n", stamp->x, stamp->y);
+	    continue;
+	}
         overlay[Noverlay].x = stamp->x;
         overlay[Noverlay].y = stamp->y;
@@ -269,5 +277,5 @@
 bool pmSubtractionVisualShowFitInit(pmSubtractionStampList *stamps) {
 
-    // if (!pmVisualIsVisual()) return true;
+    if (!pmVisualIsVisual()) return true;
 
     // generate 4 storage images large enough to hold the N stamps:
@@ -306,5 +314,5 @@
 bool pmSubtractionVisualShowFitAddStamp(psKernel *target, psKernel *source, psKernel *convolution, double background, double norm, int index) {
 
-    // if (!pmVisualIsVisual()) return true;
+    if (!pmVisualIsVisual()) return true;
 
     double sum;
@@ -377,5 +385,5 @@
 bool pmSubtractionVisualShowFit() {
 
-    // if (!pmVisualIsVisual()) return true;
+    if (!pmVisualIsVisual()) return true;
     if (!pmVisualInitWindow(&kapa1, "ppSub:Images")) return false;
     if (!pmVisualInitWindow(&kapa2, "ppSub:Misc")) return false;
@@ -387,8 +395,11 @@
     pmVisualScaleImage(kapa1, sourceImage, "Source Stamps", 1, true);
     pmVisualScaleImage(kapa1, convolutionImage, "Convolution Stamps", 2, true);
+    KiiCenter (kapa1, 0.5*targetImage->numCols, 0.5*targetImage->numRows, 1);
 
     pmVisualScaleImage(kapa2, fresidualImage, "Frac Residual Stamps", 2, true);
+    pmVisualScaleImage(kapa2, differenceImage, "Difference Stamps", 0, true);
     pmVisualScaleImage(kapa2, residualImage, "Residual Stamps", 1, true);
-    pmVisualScaleImage(kapa2, differenceImage, "Difference Stamps", 0, true);
+    KiiCenter (kapa2, 0.5*residualImage->numCols, 0.5*residualImage->numRows, 1);
+
     pmVisualAskUser(NULL);
 
@@ -414,5 +425,5 @@
     Graphdata graphdata;
 
-    // if (!pmVisualIsVisual()) return true;
+    if (!pmVisualIsVisual()) return true;
     if (!pmVisualInitWindow(&kapa3, "ppSub:plots")) return false;