gistfile1.txt

Scenario: An non-admin cannot add a user to the featured queue # features/admin.feature:45
    Given I am a logged in user                                  # features/step_definitions/user_st
eps.rb:72
      uninitialized constant JSON::SAFE_STATE_PROTOTYPE (ActionView::TemplateError)      On line #143 of app/views/layouts/application.html.erb
                140:         var classes = <%= BroadcastsCount.all_broadcasting.collect { |name| ".#{name}
-count" }.to_json %>;
          141:         var delta_classes = <%= BroadcastsCount.all_broadcasting.collect { |name| ".#
{name}-count-delta" }.to_json %>;          142:         if($(classes.join(", ")).length > 0 || $(delta_classes.join(", ")).length > 0
){          143:           window["SOCKET"] = new Pusher(<%= PUSHER_KEY.to_json %>, <%= PUSHER_CHANNEL
.to_json %>);
          144:           var socket = window["SOCKET"];
          145:           var bindToClass = function(channel, klass){
          146:             socket.bind(channel, function(count){
                /Library/Ruby/Gems/1.8/gems/aws-s3-0.6.2/lib/aws/s3/extensions.rb:206:in `const_missing'
          app/views/layouts/application.html.erb:143:in `to_json'
          app/views/layouts/application.html.erb:143
          /Library/Ruby/Gems/1.8/gems/rspec-rails-1.3.2/lib/spec/rails/extensions/action_view/base.r
b:27:in `render'
          /Library/Ruby/Gems/1.8/gems/rspec-rails-1.3.2/lib/spec/rails/extensions/action_view/base.r
b:27:in `render'
          /Library/Ruby/Gems/1.8/gems/hoptoad_notifier-2.2.2/lib/hoptoad_notifier/rack.rb:27:in `cal
l'
          webrat (0.7.0) lib/webrat/adapters/rails.rb:46:in `send'
          webrat (0.7.0) lib/webrat/adapters/rails.rb:46:in `do_request'
          webrat (0.7.0) lib/webrat/adapters/rails.rb:15:in `get'          (__FORWARDABLE__):3:in `__send__'
          (__FORWARDABLE__):3:in `get'
          webrat (0.7.0) lib/webrat/core/session.rb:277:in `send'
          webrat (0.7.0) lib/webrat/core/session.rb:277:in `process_request'
          webrat (0.7.0) lib/webrat/core/session.rb:118:in `request_page'
          webrat (0.7.0) lib/webrat/core/session.rb:216:in `visit'
          (eval):2:in `visit'
          features/support/step_helpers.rb:99:in `visit'
          features/step_definitions/user_steps.rb:30
          cucumber (0.6.4) bin/./lib/cucumber/core_ext/instance_exec.rb:48:in `instance_exec'
          cucumber (0.6.4) bin/./lib/cucumber/core_ext/instance_exec.rb:48:in `cucumber_instance_exec'
          cucumber (0.6.4) bin/./lib/cucumber/core_ext/instance_exec.rb:69:in `cucumber_run_with_backtrace_filtering'
          cucumber (0.6.4) bin/./lib/cucumber/core_ext/instance_exec.rb:36:in `cucumber_instance_exec'
          cucumber (0.6.4) bin/./lib/cucumber/rb_support/rb_step_definition.rb:55:in `invoke'

If you see something like this, I recommend 'sudo gem uninstall json' and then choosing the option for "All Versions". ... It worked for me.