After testing your suggestions, the problem persists.
And I need to use Client.new since I'm expecting the login and password from a web form.
The full RESTError:
Twitter::RESTError (Not Found):
vendor/gems/twitter4r-0.3.1/lib/twitter/client/base.rb:39:in `raise_rest_error'
vendor/gems/twitter4r-0.3.1/lib/twitter/client/base.rb:44:in `handle_rest_response'
vendor/gems/twitter4r-0.3.1/lib/twitter/client/base.rb:18:in `http_connect'
c:/ruby/lib/ruby/1.8/net/http.rb:547:in `start'
vendor/gems/twitter4r-0.3.1/lib/twitter/client/base.rb:14:in `http_connect'
vendor/gems/twitter4r-0.3.1/lib/twitter/client/user.rb:61:in `my'
app/controllers/user_controller.rb:18:in `login'
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
c:/ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
c:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start'
c:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
c:/ruby/lib/ruby/1.8/webrick/server.rb:95:in `start'
c:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `each'
c:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `start'
c:/ruby/lib/ruby/1.8/webrick/server.rb:23:in `start'
c:/ruby/lib/ruby/1.8/webrick/server.rb:82:in `start'
-e:2:in `load'
Hope it helps. Thanks,
Sérgio Santos