Problem With CGI::Session

Hi,      I installed rails 2.3.5 and ruby 1.8.7 and downloaded the rfacebook plugin to create a simple facebook app and then when I ran some of the rake tasks I ran into problem like "undefined const CGI::Session" and when I googled about it, it said this was a change in Rails 2.3 where CGI::Session was changed to ActionController::Session. But the rfacebook plugin still uses CGI::Session. So what I did was I changed the CGI::Session to ActionController::Session but it still gave me the same error. Any ideas what can be done? Is there a way to use the old CGI::Session ?