after login with authlogic_facebook_connect no redirect

[picharras]

Hi. my app in ruby on rails 3.1.3 after login with authlogic_facebook_connect no redirect to root_url. My button code is:
<%= authlogic_facebook_login_button( "Facebook",:controller=>"user_sessions").html_safe %>
No make the login by post with 'user_sessions'. stay in form login.

My code of form login is:

<%= form_for(@user_session) do |f| %>
<h1>Accede</h1>
<% if @user_session.errors.any? %>
<div id="error_explanation">
  <h2><%= pluralize(@user_session.errors.count, "error") %>. Corrige los siguiente:</h2>
  <ul>
  <% @user_session.errors.full_messages.each do |msg| %>
    <li><%= msg %></li>
  <% end %>
  </ul>
</div>
<% end %>
<p><%= f.text_field :username, :placeholder=>"Correo electrónico" %></p>
<p><%= f.password_field :password,:placeholder=>"Contraseña" %></p>
<p><%= f.check_box :remember_me %> <%= f.label "Recordarme" %></p>
    <p><%= f.submit "Iniciar" %></p>
  <div style="clear:both;"></div></p>
<p>O accede instantaneamente con: <%= authlogic_facebook_login_button("Facebook",:controller=>"user_sessions").html_safe%> <a href="#"><img src="/assets/twitter.png" alt="" /></a></p>
<% end %>

I have my app of facebook created and app_id, secret, api_key. Nor do I see the new application in my facebook

[picharras]

solved, the problem was the form of facebook is within the normal form. A form into another.

[picharras]

Now, the problem is:

Started POST "/user_sessions" for ::ffff:187.155.37.77 at Tue Jan 17 04:15:08 +0000 2012
Processing by UserSessionsController#create as HTML
Parameters: {"authenticity_token"=>"THE TOKEN JAJAJAJA"}
Completed 500 Internal Server Error in 1497ms

NoMethodError (undefined method `on' for #<Authlogic::Session::Validation::Errors:0x4093d60>):
app/controllers/user_sessions_controller.rb:22:in `create'
app/controllers/user_sessions_controller.rb:21:in `create'

My method create on user_sessions is:

def create
    @user_session = UserSession.new(params[:user_session])

    respond_to do |format|
      if @user_session.save
         format.html { redirect_to(:users, :notice => 'User session was successfully created.') }
         format.xml  { render :xml => @user_session, :status => :created, :location => @user_session }
      else
         format.html { render :action => "new" }
         format.xml  { render :xml => @user_session.errors, :status => :unprocessable_entity }
    end
  end
 end