=== modified file 'driver-csi.c'
--- driver-csi.c	2012-11-30 15:31:04 +0000
+++ driver-csi.c	2012-11-30 15:23:41 +0000
@@ -345,8 +345,10 @@
     p++;
   }
 
-  if(present)
-    argi++;
+  if(!present)
+    args[argi] = -1;
+
+  argi++;
 
   *nargs = argi;
   *csi_len = csi_end + 1;