title: java.lang.NoClassDefFoundError: Could not initialize class com.sun.xml.internal.ws.fault.SOAPFaultBuilder
body: <p>I'm using JBoss 4 with Java 6u29. I generated some classes for a soap webservice with wsimport. Everything works fine except for one thing.</p>
  
  <p>Whenever the webservice responds with a soap fault I get this exception:</p>
  
  <pre><code>java.lang.NoClassDefFoundError: Could not initialize class com.sun.xml.internal.ws.fault.SOAPFaultBuilder
  </code></pre>
  
  <p>The class is included in the JRE. I have no idea why this class isn't found. I searched on google but wasn't successfull. Do you have any idea what could cause this error?</p>