Fix ajax debug popup opening

Feb 25, 2013 12:05:50 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet default threw exception
java.lang.ClassNotFoundException: org.apache.xerces.parsers.SAXParser
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
	at org.xml.sax.helpers.NewInstance.newInstance(NewInstance.java:73)
	at org.xml.sax.helpers.XMLReaderFactory.loadClass(XMLReaderFactory.java:227)
	at org.xml.sax.helpers.XMLReaderFactory.createXMLReader(XMLReaderFactory.java:190)
	at org.nuxeo.wss.servlet.config.XmlConfigHandler.loadConfig(XmlConfigHandler.java:115)
	at org.nuxeo.wss.servlet.config.XmlConfigHandler.loadConfig(XmlConfigHandler.java:100)
	at org.nuxeo.wss.servlet.config.XmlConfigHandler.getConfigEntries(XmlConfigHandler.java:126)
	at org.nuxeo.wss.servlet.config.FilterBindingResolver.computeBindingForRequest(FilterBindingResolver.java:74)
	at org.nuxeo.wss.servlet.config.FilterBindingResolver.getBinding(FilterBindingResolver.java:63)
	at org.nuxeo.wss.servlet.config.FilterBindingResolver.getBinding(FilterBindingResolver.java:48)
	at org.nuxeo.wss.servlet.BaseWSSFilter.doFilter(BaseWSSFilter.java:115)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Thread.java:722)