Index: trunk/ppBackground/src/ppBackgroundStackData.c
===================================================================
--- trunk/ppBackground/src/ppBackgroundStackData.c	(revision 36615)
+++ trunk/ppBackground/src/ppBackgroundStackData.c	(revision 36649)
@@ -50,4 +50,5 @@
 
     data->modelMap = NULL;
+    data->model_iteration = 0;
     data->ra_min   = 1e9;
     data->ra_max   = -1e9;