Index: trunk/psastro/src/psastroConvert.c
===================================================================
--- trunk/psastro/src/psastroConvert.c	(revision 15890)
+++ trunk/psastro/src/psastroConvert.c	(revision 15941)
@@ -46,4 +46,6 @@
     // psVector *index = psArraySortIndex (sources, pmSourceSortBySN);
     psVector *index = psArraySortIndex (NULL, inStars, psastroSortByMag);
+
+    // XXX need to exit gracefully is inStars->n is 0 (or 1?)
 
     // we are going to select the brighter Nmax subset for astrometry