Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.97
diff -u -r1.97 menu.inc
--- includes/menu.inc	8 Jan 2006 12:17:57 -0000	1.97
+++ includes/menu.inc	18 Jan 2006 19:01:27 -0000
@@ -353,7 +353,7 @@
   // We found one, and are allowed to execute it.
   $arguments = isset($menu['callbacks'][$path]['callback arguments']) ? $menu['callbacks'][$path]['callback arguments'] : array();
   $arg = substr($_GET['q'], strlen($path) + 1);
-  if (strlen($arg)) {
+  if (strlen($arg) && is_array($arguments)) {
     $arguments = array_merge($arguments, explode('/', $arg));
   }