Login Generator issues

SO I installed the Login Generator gem:

application.rb:
require ‘login_system’

class ApplicationController < ActionController::Base
include LoginSystem
model :user
end

I keep on getting:
no such file to load – login_system

This error occured while loading the following files:
application.rb
login_system

RAILS_GEM_VERSION = ‘1.2.3’

I have no idea whats wrong.

Please help.