Index: /trunk/ppImage/src/ppImageParseCamera.c
===================================================================
--- /trunk/ppImage/src/ppImageParseCamera.c	(revision 12745)
+++ /trunk/ppImage/src/ppImageParseCamera.c	(revision 12746)
@@ -259,4 +259,9 @@
     }
 
+    // Turn off mask and weight output if we're not doing anything interesting
+    if (!options->doMask && !options->doShutter && !options->doFlat && !options->doPhotom) {
+        outMask->save = false;
+        outWeight->save = false;
+    }
 
 #if 0