title: Error when installing json 1.7.5 in rails
body: <p>I am trying to install latest version of json using gem bundle install and it results in an error. I am trying to install within aptana studio 3 workspace. </p>
  
  <p>I get the following error - can anyone throw some light on this issue -</p>
  
  <p>Installing json (1.7.5) with native extensions 
  Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.</p>
  
  <p>An error occurred while installing json (1.7.5), and Bundler cannot continue.
  Make sure that <code>gem install json -v '1.7.5'</code> succeeds before bundling.</p>
  
  <p>After seeing this error I just ran install json and it runs fine but json doesnt seem to install.</p>
  
  <p>--
  Sandesh</p>