title: uninitialized constant ActionController::Caching::Sweeper
body: <p>When precompiling production environment I receive an <strong>uninitialized constant ActionController::Caching::Sweeper</strong> error (same with heroku). In the development environment and with localhost everything is working fine. Thx for any suggestions.</p>
  
  <pre><code>C:\Sites\code\myapp&gt;bundle exec rake assets:precompile RAILS_ENV=production --trace
  ** Invoke assets:precompile (first_time)
  ** Invoke assets:environment (first_time)
  ** Execute assets:environment
  ** Invoke environment (first_time)
  ** Execute environment
  rake aborted!
  uninitialized constant ActionController::Caching::Sweeper
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/bundler/gems/spree_reviews-5447d2231446/app/models/spree/review_sweeper.rb:1:in `&lt;top (required)&gt;'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/engine.rb:465:in `block (2 levels) in eager_load!'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/engine.rb:464:in `each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/engine.rb:464:in `block in eager_load!'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/engine.rb:462:in `each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/engine.rb:462:in `eager_load!'
  C:in `eager_load!'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/application/finisher.rb:56:in `each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/application/finisher.rb:56:in `block in &lt;module:Finisher&gt;'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/tsort.rb:150:in `block in tsort_each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/tsort.rb:219:in `each_strongly_connected_component_from'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/tsort.rb:182:in `block in each_strongly_connected_component'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/tsort.rb:180:in `each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/tsort.rb:180:in `each_strongly_connected_component'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/tsort.rb:148:in `tsort_each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
  C:/Sites/code/farmfood/config/environment.rb:5:in `&lt;top (required)&gt;'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/polyglot-0.3.3/lib/polyglot.rb:63:in `require'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/polyglot-0.3.3/lib/polyglot.rb:63:in `require'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/application.rb:189:in `require_environment!'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/application.rb:249:in `block in run_tasks_blocks'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `call'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `block in execute'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `execute'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:175:in `block in invoke_with_call_chain'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:168:in `invoke_with_call_chain'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:161:in `invoke'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/sprockets-rails-2.0.0/lib/sprockets/rails/task.rb:54:in `block (2 levels) in define'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `call'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:236:in `block in execute'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:231:in `execute'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:175:in `block in invoke_with_call_chain'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:168:in `invoke_with_call_chain'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:197:in `block in invoke_prerequisites'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:195:in `each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:195:in `invoke_prerequisites'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:174:in `block in invoke_with_call_chain'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:168:in `invoke_with_call_chain'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/task.rb:161:in `invoke'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:149:in `invoke_task'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `block (2 levels) in top_level'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `each'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:106:in `block in top_level'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:115:in `run_with_threads'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:100:in `top_level'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:78:in `block in run'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:165:in `standard_exception_handling'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/lib/rake/application.rb:75:in `run'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-10.1.0/bin/rake:33:in `&lt;top (required)&gt;'
  C:/RailsInstaller/Ruby1.9.3/bin/rake:23:in `load'
  C:/RailsInstaller/Ruby1.9.3/bin/rake:23:in `&lt;main&gt;'
  Tasks: TOP =&gt; environment
  </code></pre>