Index: trunk/psphot/src/psphotFitSourcesLinear.c
===================================================================
--- trunk/psphot/src/psphotFitSourcesLinear.c	(revision 32348)
+++ trunk/psphot/src/psphotFitSourcesLinear.c	(revision 32633)
@@ -134,4 +134,7 @@
     for (int i = 0; i < sources->n; i++) {
         pmSource *source = sources->data[i];
+
+	// psAssert (source->peak, "source without peak??");
+	// psAssert (source->peak->footprint, "peak without footprint??");
 
         // turn this bit off and turn it on again if we pass this test