Index: trunk/psphot/src/psphotGuessModels.c
===================================================================
--- trunk/psphot/src/psphotGuessModels.c	(revision 32633)
+++ trunk/psphot/src/psphotGuessModels.c	(revision 32996)
@@ -46,5 +46,5 @@
     psAssert (detections, "missing detections?");
 
-    psArray *sources = detections->newSources;
+    psArray *sources = detections->allSources;
     psAssert (sources, "missing sources?");
 
@@ -160,4 +160,7 @@
         pmSource *source = sources->data[i];
 
+	// do not redo sources already guessed
+	if (source->tmpFlags & PM_SOURCE_TMPF_MODEL_GUESS) continue;
+
         // this is used to mark sources for which the model is measured. We check later that
         // all are used.