title: OpenX upgrade results in plugin errors
body: <p>After upgrading to OpenX 2.8.8, I'm getting these errors:</p>
  
  <pre><code>PEAR Error 
  DB_DataObject Error: autoload:Could not find class DataObjects_Ext_market_assoc_data using class_location value 
  
  PEAR Error 
  DB_DataObject Error: factory could not find class from ext_market_assoc_data 
  </code></pre>
  
  <p>Can you suggest what I can do to resolve these errors or further diagnose the issue? It's on several pages, including pages that display banners -- but not on the live site.</p>
  
  <p>TTFN
  Travis</p>