Index: trunk/psphot/src/psphotRoughClass.c
===================================================================
--- trunk/psphot/src/psphotRoughClass.c	(revision 7758)
+++ trunk/psphot/src/psphotRoughClass.c	(revision 8437)
@@ -11,5 +11,8 @@
 
     // did we find a valid psfClump?
-    if (!psfClump.X || !psfClump.Y) return false;
+    if (!psfClump.X || !psfClump.Y) {
+	psError(PSPHOT_ERR_PSF, true, "Failed to find a valid PSF clump");
+	return false;
+    }
 
     // group into STAR, COSMIC, EXTENDED, SATURATED, etc.