Index: trunk/psphot/src/psphotMakeFluxScale.c
===================================================================
--- trunk/psphot/src/psphotMakeFluxScale.c	(revision 30624)
+++ trunk/psphot/src/psphotMakeFluxScale.c	(revision 36863)
@@ -38,5 +38,5 @@
             } else {
 		// measure the fitMag for this model
-		fitSum = model->modelFlux (model->params);
+		fitSum = model->class->modelFlux (model->params);
 	    }
 	    if (fitSum < 1.e-6) continue;