Redmine

Pessoal alguem pode me ajudar estou configurando o redmine versão 2.3.7 ao executar o comando:

rake generate_secret_token

Ocorre o erro abaixo:

2013-08-26 13:39:05.3023 1137/7f887c794700 Pool2/Spawner.h:738 ]: [App 1270 stdout]
2013-08-26 13:39:05.4753 1137/7f887c794700 Pool2/Implementation.cpp:767 ]: Could not spawn process for group /var/www/html/redmine#default: An error occured while starting up the preloader.
in 'void Passenger::ApplicationPool2::SmartSpawner::handleErrorResponse(Passenger::ApplicationPool2::SmartSpawner::StartupDetails&)' (SmartSpawner.h:455)
in 'std::string Passenger::ApplicationPool2::SmartSpawner::negotiatePreloaderStartup(Passenger::ApplicationPool2::SmartSpawner::StartupDetails&)' (SmartSpawner.h:558)
in 'void Passenger::ApplicationPool2::SmartSpawner::startPreloader()' (SmartSpawner.h:206)
in 'virtual Passenger::ApplicationPool2::ProcessPtr Passenger::ApplicationPool2::SmartSpawner::spawn(const Passenger::ApplicationPool2::Options&)' (SmartSpawner.h:744)
in 'void Passenger::ApplicationPool2::Group::spawnThreadRealMain(const Passenger::ApplicationPool2::SpawnerPtr&, const Passenger::ApplicationPool2::Options&, unsigned int)' (Implementation.cpp:700)

2013-08-26 13:39:05.4814 1137/7f887a524700 agents/HelperAgent/RequestHandler.h:1900 ]: [Client 20] Cannot checkout session. An error occured while starting up the preloader.
Error page:
no such file to load -- rails/all (LoadError)
/usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:51:in `gem_original_require'
/usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:51:in `require'
/var/www/html/redmine/config/application.rb:3
/usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:51:in `gem_original_require'
/usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:51:in `require'
/var/www/html/redmine/config/environment.rb:2
/usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:51:in `gem_original_require'
/usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:51:in `require'
config.ru:3
/usr/lib64/ruby/gems/1.8/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
/usr/lib64/ruby/gems/1.8/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
config.ru:1:in `new'
config.ru:1

Segue as gem instaladas:

• LOCAL GEMS ***
  ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]

actionmailer (2.3.4)
actionpack (2.3.4)
activerecord (2.3.4)
activeresource (2.3.4)
activesupport (2.3.4)
atomic (1.1.13)
bundler (1.3.5)
daemon_controller (1.1.5)
i18n (0.6.5)
minitest (5.0.6, 4.7.5)
multi_json (1.7.9)
passenger (4.0.14)
rack (1.5.2, 1.0.1)
rails (2.3.4)
rake (10.1.0)
ruby (0.1.0)
thread_safe (0.1.2)
tzinfo (1.0.1, 0.3.37)

O sistema operacional é centeos kernel 2.6.32-358.14.1.el6.x86_64

ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]

Rails 2.3.4

Alguem pode me dar um help para resolver esse ?

Obrigado.