Index: trunk/psphot/src/psphotChoosePSF.c
===================================================================
--- trunk/psphot/src/psphotChoosePSF.c	(revision 36623)
+++ trunk/psphot/src/psphotChoosePSF.c	(revision 36863)
@@ -448,5 +448,5 @@
 
             // get the model full-width at half-max
-            float FWHM_MAJOR = 2*modelPSF->modelRadius (modelPSF->params, 0.5);
+            float FWHM_MAJOR = 2*modelPSF->class->modelRadius (modelPSF->params, 0.5);
 
             // XXX make sure this is consistent with the re-definition of PM_PAR_SXX