Warning: require_once(\constantes.plib) [function.require-once]: failed to open stream: No such file or directory in D:\www\Lacor\www\html\catalogo\ver-producto\index.phtml on line 3

Fatal error: require_once() [function.require]: Failed opening required '\constantes.plib' (include_path='.;C:\php5\pear') in D:\www\Lacor\www\html\catalogo\ver-producto\index.phtml on line 3