NameError: uninitialized constant ActionView::AbstractRenderer

[rbq]

NameError: uninitialized constant ActionView::AbstractRenderer
~/.rvm/gems/ruby-1.9.3-p0/gems/active_decorator-0.2.1/lib/active_decorator/monkey/action_view/partial_renderer.rb:2:in `<module:ActionView>'
~/.rvm/gems/ruby-1.9.3-p0/gems/active_decorator-0.2.1/lib/active_decorator/monkey/action_view/partial_renderer.rb:1:in `<top (required)>'
~/.rvm/gems/ruby-1.9.3-p0/gems/active_decorator-0.2.1/lib/active_decorator/railtie.rb:7:in `block (2 levels) in <class:Railtie>'
~/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.0.11/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
~/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.0.11/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'

Gemfile:

gem 'rails', '~> 3.0.7'
gem 'sqlite3'
gem 'haml-rails'
gem 'sass'
gem 'compass'
gem 'redcarpet', '< 2.0.0'
gem 'auto_html'
gem 'activeadmin'
gem 'validate_email'
gem 'date_validator'
gem 'paperclip', '~> 2.3.0'
gem 'friendly_id', '~> 3.3.1'
gem 'hpricot'
gem 'active_decorator'

group :development do
  gem 'active_reload'
  gem 'capistrano'
  gem 'capistrano_colors', :require => false
end

What am I doing wrong?

[amatsuda]

@rbq It seems this gem has been working on Rails '>= 3.1' only, but the situation was finally fixed in 3c4db43, so the gem '>= 0.3.1' will support Rails 3.0.x. Thanks!