POLISH version replacing ą , ć ,ę ,ł , ń ,ś ,ż ,ź with a, c, e, l, n, s, z, z Open phpbb_seo_class.php and find : ( Otworz phpbb_seo_class.php i znajdz ) $this->seo_path['phpbb_script'] = $script_path; After add : ( Ponizej dodaj ) // --> Custom str_Replace ar...