title: Decoder zip not available - PIL and sorl-thumbnail
body: <p>I use PIL and I have this error:</p>
  
  <blockquote>
    <p>decoder zip not available</p>
  </blockquote>
  
  <p>in this line: <code>{% thumbnail design.img "511x400" crop="center" as im %}</code></p>
  
  <p>Full:</p>
  
  <pre><code>{% thumbnail design.img "511x400" crop="center" as im %}
      &lt;img src="{{ im.url }}" width="{{ im.width }}" height="{{ im.height }}"&gt;
  {% endthumbnail %}
  </code></pre>
  
  <p>I use Django 1.5, PIL and <strong>virtualenv</strong></p>
  
  <p>How can I fix this error?</p>
  
  <p>EDIT:</p>
  
  <p>I try:</p>
  
  <pre><code>pip uninstall PIL
  apt-get install libjpeg-dev
  apt-get install libfreetype6-dev
  apt-get install zlib1g-dev
  apt-get install libpng12-dev
  pip install PIL --upgrade
  </code></pre>
  
  <p>but it still does not work</p>
  
  <p>Result from terminal:</p>
  
  <pre><code>PIL 1.1.7 SETUP SUMMARY
      --------------------------------------------------------------------
      version       1.1.7
      platform      linux2 2.7.3 (default, Sep 26 2012, 21:53:58)
                    [GCC 4.7.2]
      --------------------------------------------------------------------
      *** TKINTER support not available
      *** JPEG support not available
      *** ZLIB (PNG/ZIP) support not available
      *** FREETYPE2 support not available
      *** LITTLECMS support not available
  
  To add a missing option, make sure you have the required
  library, and set the corresponding ROOT variable in the
  setup.py script.
  </code></pre>