title: Ghost unable to start due to missing dependencies
body: <p>My installation of Ghost on a DigitalOcean server running Ubuntu 14.04 suddenly stopped working. The webpage returns a 502 Bad Gateway. When I try <code>npm start</code> the console returns:</p>
  
  <blockquote>
    <p>ERROR: Ghost is unable to start due to missing dependencies:</p>
    
    <blockquote>
      <p>Cannot find module 'hover.css'</p>
    </blockquote>
  </blockquote>
  
  <p>I'm completely stuck. I read a few other threads on a similar issue, but none of the answers helped. I've tried removing node_modules and reinstalling node, plus clearing the cache in between. That doesn't work.</p>
  
  <p>All this happened after I added a CSS transition to <code>img</code> tags on hover.</p>