title: Compass error for command 'grunt server'
body: <p>I'm running a project for which I installed nodeJs, ruby, yeoman, compass, etc. Now Im running my project with command
  <code>&gt;grunt server</code> or <code>&gt;grunt server --force</code></p>
  
  <p>but it is giving me following error for compass.</p>
  
  <pre><code>E:\CRM_workspace\CRM_from_repo\ria&gt;grunt server --force
  Running "server" task
  &gt;&gt; The `server` task has been deprecated. Use `grunt serve` to start a server.
  
  Running "serve" task
  
  Running "clean:server" (clean) task
  Cleaning .tmp...OK
  
  Running "concurrent:server" (concurrent) task
  
  Running "copy:styles" (copy) task
  
  
  Done, without errors.
  
  Running "compass:server" (compass) task
  directory .tmp/styles/
         create .tmp/styles/main.css (3.069s)
      Warning: ↑ Used --force, continuing.
  
  Done, but with warnings.
  
  Running "autoprefixer:dist" (autoprefixer) task
  
  Running "connect:livereload" (connect) task
  Started connect web server on 127.0.0.1:9000.
  
  Running "watch" task
  Waiting...
  </code></pre>
  
  <p>I tried uninstalling and installing compass and sass. but still the same error for <code>'compass:server'</code></p>
  
  <p>What do i need to do?</p>
  
  <p>this is the details error I got:</p>
  
  <pre><code>E:\CRM_workspace\CRM_from_repo\ria&gt;grunt serve
  Running "serve" task
  
  Running "clean:server" (clean) task
  
  Running "concurrent:server" (concurrent) task
  
  Running "copy:styles" (copy) task
  
  
  Done, without errors.
      Warning: Errno::EACCES on line ["891"] of C: Permission denied - (E:/CRM_wor
  kspace/CRM_from_repo/ria/.tmp/styles/main.css20140321-4456-1klow8l, E:/CRM_works
  pace/CRM_from_repo/ria/.tmp/styles/main.css)
      Run with --trace to see the full backtrace Use --force to continue.
  
      Aborted due to warnings.
  
  
  Execution Time (2014-03-21 11:21:08 UTC)
  concurrent:server  6.3s  ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ 100%
  Total 6.3s
  </code></pre>