It really helps if you post as much information as possible. In this particular case your form html (I mean from page source in browser) and request params would be very helpful. I'm not an expert in nested forms but it's probably because you are receiving an array instead of a hash in a request.
-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.