Index: trunk/ppBackground/src/ppBackgroundCamera.c
===================================================================
--- trunk/ppBackground/src/ppBackgroundCamera.c	(revision 28280)
+++ trunk/ppBackground/src/ppBackgroundCamera.c	(revision 28282)
@@ -68,4 +68,11 @@
     output->save = true;
 
+    pmFPAfile *outMask = pmFPAfileDefineOutput(data->config, output->fpa, "PPBACKGROUND.OUTPUT.MASK");
+    if (!outMask) {
+        psError(psErrorCodeLast(), false, "Unable to define output.");
+        return false;
+    }
+    outMask->save = true;
+
 #if 0
     // Now the camera has been determined, we can read the recipe