title: Possible causes for "schema feature not recognized for SAX driver"
body: <p>I am trying to execute a program developed elsewhere, and I see the following exception:</p>
  
  <pre><code>org.jdom.RuntimeException: http://apache.org/xml/features/validation/schema 
  feature not recognized for SAX driver org.apache.cimson.parser.XMLReaderImpl
  </code></pre>
  
  <p>This program ran successfully a few months ago, but my development platform was rebuilt (apparently into a different configuration).  Any ideas why this program is now throwing the above exception?</p>