Index: trunk/ppSim/src/ppSimCreate.c
===================================================================
--- trunk/ppSim/src/ppSimCreate.c	(revision 30618)
+++ trunk/ppSim/src/ppSimCreate.c	(revision 41173)
@@ -159,5 +159,8 @@
         return false;
     }
-    simSources->save = true;
+
+    // XXXX TEST this is causing trouble for unknown reasons -- output step is blowing up.
+    // simSources->save = true;
+    simSources->save = false;
 
     // if we have loaded an input image, we derive certain values from the image, if possible