I've been having the same problems. After I upgraded my zope from 2.1 to 2.2.3, they worked fine before that. Cheers Tom -- tom smith | tom@othermedia.com http://www.othermedia.com/blog tel 020 8541 5355 | fax 020 8541 5507 11 penrhyn road, kingston-upon-thames, london KT1 2BZ