Can't Generate nifty:authentication

[marclipovsky]

This is what I get when I run: rails g nifty:authentication

Any thoughts?

VolAppMin:rails g nifty:authentication
/Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/whiny_nil.rb:48:in `method_missing': undefined method `context_class' for nil:NilClass (NoMethodError)
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/sass-rails-3.1.4/lib/sass/rails/railtie.rb:61:in `block in <class:Railtie>'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/initializable.rb:25:in `instance_exec'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/initializable.rb:25:in `run'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/initializable.rb:50:in `block in run_initializers'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `each'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `run_initializers'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/application.rb:92:in `initialize!'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /Users/marclipovsky/Sites/Living Hope/VolAppMin/config/environment.rb:5:in `<top (required)>'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `block in require'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `block in load_dependency'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:640:in `new_constants_in'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/application.rb:78:in `require_environment!'
    from /Users/marclipovsky/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.0/lib/rails/commands.rb:22:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'