title: compass:server not found when running `grunt server`
body: <h3>The problem</h3>
  
  <p><code>grunt server</code> outputs this:</p>
  
  <pre><code>Warning: Task "compass:server" not found.
  </code></pre>
  
  <p>I uploaded Gruntfile.js here: <a href="https://gist.github.com/ComFreek/7289648">https://gist.github.com/ComFreek/7289648</a><br />
  That's the default file I got after creating a new Yeoman project.</p>
  
  <hr />
  
  <h3>Details</h3>
  
  <p>I am reading <a href="http://www.html5rocks.com/en/tutorials/webcomponents/yeoman/">Building Web Apps With Yeoman And Polymer</a> and following the described console commands to run.</p>
  
  <p>My system:</p>
  
  <ul>
  <li>Windows 8.1 Pro 64-bit</li>
  <li>NodeJS 0.10.21</li>
  <li>NPM 1.3.11</li>
  </ul>
  
  <p>I've already executed these commands:</p>
  
  <pre><code>npm install -g yo
  npm install generator-polymer -g
  
  yo polymer
  </code></pre>
  
  <p><code>grunt server</code> told me that I had to install Ruby and <a href="https://github.com/gruntjs/grunt-contrib-compass">Compass</a>.</p>
  
  <ul>
  <li><p>I installed Ruby from here:
  <a href="http://rubyinstaller.org/">http://rubyinstaller.org/</a><br />
  After installing, I also successfully whether Ruby has really been registered in the PATH.</p></li>
  <li><p>I used NPM for installing Compass:</p>
  
  <pre><code>npm install grunt-contrib-compass --save-dev -g
  </code></pre>
  
  <p>(I tried a local and global install of Compass. Neither of them worked.)</p></li>
  </ul>
  
  <p><br /></p>
  
  <p>This is the exact output of <code>grunt</code>:</p>
  
  <pre><code>D:\test&gt;grunt server
  Running "server" task
  Warning: Task "compass:server" not found. Use --force to continue.
  
  Aborted due to warnings.
  
  Elapsed time
  server  4ms
  Total   4ms
  </code></pre>
  
  <p><hr /></p>
  
  <h3>It works now...</h3>
  
  <p>Unfortunately, I still don't know the exact cause. I went through all of my instructions above again, and it just worked out of the box.</p>
  
  <p>In any case, I recommend updating all packages. My version numbers are (last edited: 02.02.14):</p>
  
  <pre><code>[NodeJS v.0.10.24]
  [NPM 1.3.21]
  [grunt-cli v0.1.11]
  [grunt v0.4.2]
  </code></pre>