Index: /trunk/psModules/src/imcombine/pmSubtractionStamps.c
===================================================================
--- /trunk/psModules/src/imcombine/pmSubtractionStamps.c	(revision 30738)
+++ /trunk/psModules/src/imcombine/pmSubtractionStamps.c	(revision 30739)
@@ -913,4 +913,14 @@
 	psFree (norm2);
 	return false; 
+    }
+
+    if (!isfinite(R1) || !isfinite(R2)) {
+        psError(PM_ERR_STAMPS, true, "Kron Radii are not finite (failure to converge).");
+	psFree (stats);
+	psFree (flux1);
+	psFree (flux2);
+	psFree (norm1);
+	psFree (norm2);
+        return false;
     }