a ver modifica estas líneas (77 en adelante):
Código PHP:
$exclude = get_option('t_exclude_pages');
if ($exclude == 'no' || $exclude[0] == 'no' || $exclude[0] == ''){
$exclude = '';
} else {
$exclude = join(',', $exclude );
}
$pages = wp_list_pages('sort_column=menu_order&title_li=&echo=0&depth=0&exclude='. $exclude);
$pages = preg_replace('%<a ([^>]+)>%U','<a $1><span>', $pages);
$pages = str_replace('</a>','</span></a>', $pages);
echo $pages;
y revisa
