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org/apache/xml/serialize/OutputFormat
java.lang.NoClassDefFoundError: org/apache/xml/serialize/OutputFormat	at security.UserProfile.getNav(Unknown Source)	at ACTS.doPost(Unknown Source)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:807)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:908)	at org.apache.catalina.core.StandardWrapperValve.invokeServletService(StandardWrapperValve.java:771)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:322)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:212)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:209)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)	at com.iplanet.ias.web.connector.nsapi.NSAPIProcessor.process(NSAPIProcessor.java:161)	at com.iplanet.ias.web.WebContainer.service(WebContainer.java:580)