How to set up RPX widget and facebook app to authenticate with rpx_now?

Using a sample app for rpx_now

gem ( http://github.com/grosser/rpx_now_example ) on localhost: 3000, I successfully logged in via Google accounts, myOpenID, Yahoo, but can't do it via Facebook.

In RPX app / widget settings I have set the key and secret of my facebook-app. In my facebook app settings the connection url myappname.rpxnow.com

. But when I try to connect, I don't even see the facebook login page, just a few redirects and I get back to my localhost with the following exception http://gist.github.com/386520 .

Before I successfully connected with the oauth2

gem, however, not getting user data - just authentication. This time, I only set the key / secret and localhost

as my connection url. Currently I don't even ask for email etc. but still the same problem.

Could this happen because it rpx_now

cannot get the requested user data from facebook? Or is it a facebook key / secret issue? Maybe I need to provide additional settings for my facebook app?

RPXNow::ApiError in UsersController#create

Got error: Invalid parameter: token (code: 1), HTTP status: 200
RAILS_ROOT: /home/Andrei/rpx_now_example

Application Trace | Framework Trace | Full Trace
/usr/lib/ruby/gems/1.8/gems/rpx_now-0.6.20/lib/rpx_now/api.rb:71:in `parse_response'
/usr/lib/ruby/gems/1.8/gems/rpx_now-0.6.20/lib/rpx_now/api.rb:21:in `call'
/usr/lib/ruby/gems/1.8/gems/rpx_now-0.6.20/lib/rpx_now.rb:23:in `user_data'
/home/Andrei/rpx_now_example/app/controllers/users_controller.rb:16:in `create'
Request

Parameters:

None
Show session dump

Response

Headers:

{"Content-Type"=>"",
 "Cache-Control"=>"no-cache"}