I can't make rails generate controller

Question

I've ruby 1.9.3 and rails 3.1

I'm try to generate a controller with this syntax:

$rails generate controller sessions new create failure

but respond me with this error:

/Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:234:in load': /Users/Uriel/Documents/Uriel/omniauth/config/initializers/omniauth.rb:2: syntax error, unexpected tIDENTIFIER, expecting keyword_end (SyntaxError) from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:234:inblock in load' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in block in load_dependency' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:640:innew_constants_in' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in load_dependency' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:234:inload' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/engine.rb:555:in block (2 levels) in <class:Engine>' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/engine.rb:554:ineach' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/engine.rb:554:in block in <class:Engine>' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/initializable.rb:25:ininstance_exec' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/initializable.rb:25:in run' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/initializable.rb:50:inblock in run_initializers' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/initializable.rb:49:in each' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/initializable.rb:49:inrun_initializers' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/application.rb:92:in initialize!' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/railtie/configurable.rb:30:inmethod_missing' from /Users/Uriel/Documents/Uriel/omniauth/config/environment.rb:5:in <top (required)>' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/application.rb:78:inrequire' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/application.rb:78:in require_environment!' from /Users/Uriel/.rvm/gems/ruby-1.9.3-head@omniauth/gems/railties-3.1.0/lib/rails/commands.rb:22:in' from script/rails:6:in require' from script/rails:6:in'

Thanks! :)