diff -r ffa3a4938513 -r 5882f0eebb34 includes/namespaces/special.php
--- a/includes/namespaces/special.php	Sat Dec 19 16:06:29 2009 -0500
+++ b/includes/namespaces/special.php	Mon Dec 21 15:41:05 2009 -0500
@@ -82,7 +82,7 @@
   }
   
   // We add the unused variable $userpage here to silence "declaration should be compatible" errors
-  function error_404($userpage = false)
+  function error_404()
   {
     global $lang, $output;
     $func_name = "page_{$this->namespace}_{$this->page_id}";