Index: trunk/psphot/src/psphotStackArguments.c
===================================================================
--- trunk/psphot/src/psphotStackArguments.c	(revision 30624)
+++ trunk/psphot/src/psphotStackArguments.c	(revision 31154)
@@ -22,6 +22,9 @@
     }
 
-    // -version and -dumpconfig arguments
-    PSARGUMENTS_INSTANTIATE_GENERICS( psphot, config, argc, argv );
+    // generic arguments (version, dumpconfig)
+    PS_ARGUMENTS_GENERIC( psphot, config, argc, argv );
+
+    // thread arguments
+    PS_ARGUMENTS_THREADS( psphot, config, argc, argv )
 
     // save the following additional recipe values based on command-line options
@@ -29,11 +32,14 @@
     psMetadata *options = pmConfigRecipeOptions (config, PSPHOT_RECIPE);
 
-    // Number of threads is handled
-    PSARGUMENTS_INSTANTIATE_THREADSARG( psphot, config, argc, argv )
-
     // visual : interactive display mode
     if ((N = psArgumentGet (argc, argv, "-visual"))) {
         psArgumentRemove (N, &argc, argv);
         pmVisualSetVisual(true);
+    }
+
+    // memdump : enable memory spot checks
+    if ((N = psArgumentGet (argc, argv, "-memdump"))) {
+        psArgumentRemove (N, &argc, argv);
+        psMemDumpSetState(true);
     }