Index: trunk/psphot/src/psphotMakeFluxScale.c
===================================================================
--- trunk/psphot/src/psphotMakeFluxScale.c	(revision 20251)
+++ trunk/psphot/src/psphotMakeFluxScale.c	(revision 20252)
@@ -39,7 +39,7 @@
 		// measure the fitMag for this model
 		fitSum = model->modelFlux (model->params);
-		assert (fitSum > 0);
-		assert (isfinite(fitSum));
 	    }
+	    if (fitSum < 1.e-6) continue;
+	    if (!isfinite(fitSum)) continue;
 
             xPts->data.F32[Npts] = x;