title: dyld: Symbol not found: _rb_ary_new_from_values When trying to run foreman start
body: <p>I am receiving the following error when trying to run "foreman start" to execute my rails file. </p>
  
  <pre><code>dyld: Symbol not found: _rb_ary_new_from_values
    Referenced from: /Users/paulbattisson/.rvm/gems/ruby-2.1.1/gems/psych-2.0.5/lib/psych.bundle
    Expected in: flat namespace
  </code></pre>
  
  <p>If I run rails s then the app starts fine however I am wanting to use the following Procfile:</p>
  
  <pre><code>web: bundle exec rackup config.ru -p $PORT
  resque: env TERM_CHILD=1 bundle exec rake resque:work
  </code></pre>
  
  <p>So that I can utilise resque. Any help is much ppreciated. I have tried bundle install to see if that resolves the issue but it seems not. I am managed rvm via JewelryBox and using Rails 4.1.1 with Ruby 2.1.1</p>