Index: trunk/psModules/src/objects/pmPSFtryModel.c
===================================================================
--- trunk/psModules/src/objects/pmPSFtryModel.c	(revision 27818)
+++ trunk/psModules/src/objects/pmPSFtryModel.c	(revision 29004)
@@ -19,20 +19,26 @@
 #include "pmFPA.h"
 #include "pmFPAMaskWeight.h"
+
+#include "pmTrend2D.h"
+#include "pmResiduals.h"
+#include "pmGrowthCurve.h"
 #include "pmSpan.h"
+#include "pmFootprintSpans.h"
 #include "pmFootprint.h"
 #include "pmPeaks.h"
 #include "pmMoments.h"
-#include "pmResiduals.h"
-#include "pmGrowthCurve.h"
-#include "pmTrend2D.h"
+#include "pmModelFuncs.h"
+#include "pmModel.h"
+#include "pmModelUtils.h"
+#include "pmModelClass.h"
+#include "pmSourceMasks.h"
+#include "pmSourceExtendedPars.h"
+#include "pmSourceDiffStats.h"
+#include "pmSource.h"
+#include "pmSourceFitModel.h"
 #include "pmPSF.h"
-#include "pmModel.h"
-#include "pmSource.h"
-#include "pmSourceUtils.h"
 #include "pmPSFtry.h"
-#include "pmModelClass.h"
-#include "pmModelUtils.h"
-#include "pmSourceFitModel.h"
-#include "pmSourcePhotometry.h"
+#include "pmDetections.h"
+
 #include "pmSourceVisual.h"
 
@@ -49,4 +55,6 @@
 pmPSFtry *pmPSFtryModel (const psArray *sources, const char *modelName, pmPSFOptions *options, psImageMaskType maskVal, psImageMaskType markVal)
 {
+    assert (options->fitOptions);
+
     // validate the requested model name
     options->type = pmModelClassGetType (modelName);