title: Easy Thumbnails not working on Ubuntu
body: <p>I've been using Django <a href="https://github.com/SmileyChris/easy-thumbnails" rel="nofollow">Easy Thumbnails</a> and it works very nicely in my local development server on Mac OS X. But I can't get it to run in my Ubuntu production environment. I get no errors (DEBUG is set to True), it just doesn't generate the image nor does it return the URL. I have no idea where to start debugging this.</p>