I''ve got an error in my app that I cannot figure out. I''ve got a check_box_tag that I''m observing, or trying to. But Rails is throwing an error in Firebug and not rendering the JS to the page. The only change I''ve been able to make to get rid of the error is to simply remove the entire observe_field line. So can anybody tell me... What does this error message mean? Form.Element.Serializers[method] is not a function What is Rails looking at in the line <%= observe_field(''polio'', :url => {:action => ''update_std'', :id => ''polio''}) %> that it is interpreting to be a ''method'' or a ''function''? TIA, Bill -------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060628/69aa5d62/attachment.html