Massimo, thanks for adding "options" to Recaptcha I think, there should be an additional line in def __init__ in class Recaptcha in file /gluon/tools
self.options = options Without this line, self.options does not get any value. Maybe there should be an additional formal parameter of Recaptcha.__init__ def __init__ (... options = '', comment = '' ): and line 666 should be self.comment = comment Regard, Martin