title: Django cannot find my templatetags, even though it's in INSTALLED_APPS and has a __init__.py
body: <p>I just installed <a href="http://code.google.com/p/django-compress" rel="nofollow noreferrer">django-compress</a> into /Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/compress.</p>
  
  <p>I added <code>'compress'</code> to <code>INSTALLED_APPS</code>. </p>
  
  <p>In my template file, I wrote <code>{% load compressed %}</code>.  I got the error:</p>
  
  <blockquote>
    <p>'compressed' is not a valid tag
    library: Could not load template
    library from
    django.templatetags.compressed, No
    module named compressed</p>
  </blockquote>
  
  <p>I verified that there is an <code>__init__.py</code> in compress, as well as in <code>compress/templatetags/</code>.  I tried putting the compress directory into PYTHONPATH.  I ran python and wrote <code>import compress</code> and that worked.  </p>
  
  <p>What else can I try?  </p>