When I try to edit the theme twentyten ,a bug appears: PHP Warning: file_exists(): open_basedir restriction in effect. File(D:\wwwroot\wordpress/wp-contentD:\wwwroot\wordpress/wp-content/themes/twentyten/editor-style.css) is not within the allowed path(s): (D:/wwwroot) in D:\wwwroot\wordpress\wp-admin\includes\file.php on line 52