Web error after installing à la carte

Hi there,

I have install à la carte at my best on following the instruction and I have an error page when I try to load it wih the browser. 

Here is the development.log content

  ApplicationController: missing default helper module ApplicationHelper
uninitialized constant ApplicationController::ReCaptcha

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:477:in `const_missing'

./script/../config/../app/controllers/application.rb:34

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:203:in `load_without_new_constant_marking'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:203:in `load_file'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new_constants_in'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:202:in `load_file'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:94:in `require_or_load'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:60:in `depend_on'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:442:in `require_dependency'

./script/../config/../vendor/rails/railties/lib/dispatcher.rb:110:in `prepare_application'

./script/../config/../vendor/rails/railties/lib/dispatcher.rb:39:in `dispatch'

./script/../config/../vendor/rails/railties/lib/webrick_server.rb:113:in `handle_dispatch'

./script/../config/../vendor/rails/railties/lib/webrick_server.rb:79:in `service'

/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'

/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'

/usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'

/usr/lib/ruby/1.8/webrick/server.rb:162:in `start'

/usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'

/usr/lib/ruby/1.8/webrick/server.rb:95:in `start'

/usr/lib/ruby/1.8/webrick/server.rb:92:in `each'

/usr/lib/ruby/1.8/webrick/server.rb:92:in `start'

/usr/lib/ruby/1.8/webrick/server.rb:23:in `start'

/usr/lib/ruby/1.8/webrick/server.rb:82:in `start'

./script/../config/../vendor/rails/railties/lib/webrick_server.rb:63:in `dispatch'

./script/../config/../vendor/rails/railties/lib/commands/servers/webrick.rb:59

/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'

/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in `require'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:342:in `new_constants_in'

./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:495:in `require'

./script/../config/../vendor/rails/railties/lib/commands/server.rb:39

script/server:3:in `require'

script/server:3

Do I need to install the module ApplicationHelper or is my reCaptcha isn't correct ? 

Thanks for your help.