Index: trunk/psphot/src/psphotReadoutMinimal.c
===================================================================
--- trunk/psphot/src/psphotReadoutMinimal.c	(revision 33841)
+++ trunk/psphot/src/psphotReadoutMinimal.c	(revision 33842)
@@ -64,5 +64,8 @@
     // Construct an initial model for each object, set the radius to fitRadius, set circular
     // fit mask.  NOTE: only applied to sources without guess models
-    psphotGuessModels (config, view, filerule);
+    if (!psphotGuessModels (config, view, filerule)) {
+        psLogMsg ("psphot", 3, "failure to Guess Model");
+        return psphotReadoutCleanup (config, view, filerule);
+    }
 
     // linear PSF fit to source peaks