My current Gemfile

command line output

[WARNING] Could not load generator "generators/haml/controller/controller_generator". Error: Haml is not missing constant Generators!.

.................

script/rails:6:in `require'
script/rails:6
       error  haml [not found]

Gemfile.rb

source 'http://rubygems.org'

gem 'rails', '3.0.5'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'mysql2'
gem 'devise', '~>1.2', :git => 'https://github.com/plataformatec/devise.git', :branch => "v1.2"
gem "oa-oauth", :require => "omniauth/oauth"
gem "calendar_date_select"
gem "geokit-rails3"
gem 'geokit'
gem "prawn"
gem "cancan"
gem 'will_paginate'
gem "sanitize", "2.0.0"
gem "uuid"
gem "haml", ">= 3.0.0"
gem "haml-rails"
gem 'formtastic', '1.2.3'
gem "bhm-google-maps", :git => "git://github.com/YouthTree/bhm-google-maps.git"



group :development do
  gem "jquery-rails"
  gem "mongrel"
  gem "heroku"
  gem "capistrano"
  gem 'capistrano-ext'
  gem 'ruby-debug'
  gem "rails-upgrade"
end

group :test do
  gem "ci_reporter"
end