error la seccion "descargas"

cuando pongo algo a buscar en el buscador de la sección "descargas" me devuelve este error:
Fatal error: Call to a member function on a non-object in /servidor/clubseatleon.net/http/modules/UpDownload/dl-search.php on line 75
Fatal error: Call to a member function on a non-object in /servidor/clubseatleon.net/http/modules/UpDownload/dl-search.php on line 75