Index: trunk/psphot/src/psphotSourceSize.c
===================================================================
--- trunk/psphot/src/psphotSourceSize.c	(revision 29610)
+++ trunk/psphot/src/psphotSourceSize.c	(revision 29936)
@@ -49,6 +49,5 @@
     psAssert (recipe, "missing recipe?");
 
-    int num = psMetadataLookupS32 (&status, config->arguments, "PSPHOT.INPUT.NUM");
-    psAssert (status, "programming error: must define PSPHOT.INPUT.NUM");
+    int num = psphotFileruleCount(config, filerule);
 
     // skip the chisq image (optionally?)
@@ -60,5 +59,5 @@
         if (i == chisqNum) continue; // skip chisq image
         if (!psphotSourceSizeReadout (config, view, filerule, i, recipe, getPSFsize)) {
-            psError (PSPHOT_ERR_CONFIG, false, "failed on source size analysis for PSPHOT.INPUT entry %d", i);
+	    psError (PSPHOT_ERR_CONFIG, false, "failed on source size analysis for %s entry %d", filerule, i);
             return false;
         }