title: one model not reloading rails 3.2
body: <p>I have an old model amongst many that has not been touched in years.  I am adding some new methods today, and discover that after making changes this model does not reload.  Every other model I try works fine.  I.e. I go into a model and make a small useless change, and refresh a page, and it all works.</p>
  
  <p>Except for this particular model, which is named Coupon (coupon.rb).</p>
  
  <p>I am seeing nothing signficantly different about this model.  It inherits from active record base, just like everybody else, etc etc.</p>
  
  <p>I have even tried deleting all lines except </p>
  
  <pre><code># encoding: UTF-8
  class Coupon &lt; ActiveRecord::Base
  end
  </code></pre>
  
  <p>to no avail...</p>
  
  <p>What could be causing this?  Its making debugging this a pain!</p>
  
  <p>If nobody knows an answer, is there a quick work around to force this file to recompile? So I can at least get on with life?</p>