title: "uninitialized constant Cucumber::Rb_Support (NameError)" when running Cucumber for Ruby & Watir
body: <p>After installing Ruby, Cucumber and Watir using gem I get the following error:</p>
  
  <pre><code>uninitialized constant Cucumber::Rb_Support (NameError)
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/constantize.rb:41:in `constantize_name'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/constantize.rb:13:in `block in constantize'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/constantize.rb:12:in `each'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/constantize.rb:12:in `constantize'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/runtime/support_code.rb:87:in `load_programming_language'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/runtime/support_code.rb:242:in `programming_language_for'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/runtime/support_code.rb:226:in `load_file'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/runtime/support_code.rb:97:in `block in load_files!'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/runtime/support_code.rb:96:in `each'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/runtime/support_code.rb:96:in `load_files!'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/runtime.rb:242:in `load_step_definitions'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/runtime.rb:65:in `run!'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/lib/cucumber/cli/main.rb:38:in `execute!'
  W:/Programme/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-2.0.2/bin/cucumber:9:in `&lt;top (required)&gt;'
  W:/Programme/Ruby193/bin/cucumber:23:in `load'
  W:/Programme/Ruby193/bin/cucumber:23:in `&lt;main&gt;'**
  </code></pre>
  
  <p>Anyone got any idea why this is not working?
  I copied the exact example from the github page.</p>