Index: wp-admin/setup-config.php
===================================================================
--- wp-admin/setup-config.php	(revision 23454)
+++ wp-admin/setup-config.php	(working copy)
@@ -58,6 +58,7 @@
 require_once(ABSPATH . WPINC . '/compat.php');
 require_once(ABSPATH . WPINC . '/class-wp-error.php');
 require_once(ABSPATH . WPINC . '/formatting.php');
+require_once(ABSPATH . WPINC . '/kses.php');
 
 // Add magic quotes and set up $_REQUEST ( $_GET + $_POST )
 wp_magic_quotes();