title: Sphinx - loading pickled environment... failed: [Errno 2] No such file or directory
body: <p>When I'm generating the documentation I got the following error:</p>
  
  <pre><code>loading pickled environment... failed: [Errno 2] No such file or directory: '/home/me/project/.doctrees/environment.pickle'
  </code></pre>
  
  <p>The thing is that file do exists:</p>
  
  <pre><code>[me@server project]$ ls -al /home/me/project/.doctrees/environment.pickle
  -rw-rw-r-- 1 me group 723522 Feb 28 15:52 /home/me/project/.doctrees/environment.pickle
  </code></pre>
  
  <p>Any ideas?</p>