Index: trunk/ppSim/src/ppSimPhotomReadoutForce.c
===================================================================
--- trunk/ppSim/src/ppSimPhotomReadoutForce.c	(revision 18011)
+++ trunk/ppSim/src/ppSimPhotomReadoutForce.c	(revision 19926)
@@ -91,6 +91,5 @@
 
     // calculate source magnitudes (for which set??)
-    pmReadout *background = psphotSelectBackground (config, view, false);
-    psphotMagnitudes(forceSources, recipe, psf, background);
+    psphotMagnitudes(config, view, forceSources, recipe, psf);
 
     // drop the references to the image pixels held by each source