title: heroku client stopped working
body: <p>It was working just fine this morning but suddenly it giving me such error. I tried to uninstall and install it but no luck. Would appreciate if anyone can help me in it.</p>
  
  <pre><code>c:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- multi_json (LoadError)
  from c:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
  from C:/Users/Somenath/.heroku/client/lib/heroku/helpers.rb:1:in `&lt;top (required)&gt;'
  from C:/Users/Somenath/.heroku/client/lib/heroku/cli.rb:1:in `load'
  from C:/Users/Somenath/.heroku/client/lib/heroku/cli.rb:1:in `&lt;top (required)&gt;'
  from c:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
  from c:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
  from c:/Program Files (x86)/Heroku/bin/heroku:27:in `&lt;main&gt;'
  </code></pre>