Erro estranho com WebWork

ERROR com.opensymphony.xwork.config.providers.XmlConfigurationProvider - Action class [com.bna.salus.actions.laboratorio.crud.ClasseDeAnaliseAction] not found, skipping action [delete]
java.lang.NullPointerException

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xwork PUBLIC "-//OpenSymphony Group//XWork 1.0//EN" "http://www.opensymphony.com/xwork/xwork-1.0.dtd">

<xwork>
   <package name="classedeanalise" namespace="/laboratorio/classedeanalise" extends="laboratorio">
   
	<!-- Acoes de CRUD -->
    <action name="list" class="com.bna.salus.actions.laboratorio.crud.ClasseDeAnaliseAction" method="list">
  	 <result name="success" type="dispatcher">/WEB-INF/view/list/laboratorio/classesDeAnalise.jsp</result>
    </action>
    <action name="save" class="com.bna.salus.actions.laboratorio.crud.ClasseDeAnaliseAction" method="save">
      <result name="success" type="redirect">list.action</result>
      <result name="input" type="dispatcher">/WEB-INF/view/form/laboratorio/classeDeAnalise.jsp</result>
    </action>
    <action name="load" class="com.bna.salus.actions.laboratorio.crud.ClasseDeAnaliseAction" method="load">
      <result name="success" type="dispatcher">/WEB-INF/view/form/laboratorio/classeDeAnalise.jsp</result>
    </action>
    <action name="delete" class="com.bna.salus.actions.laboratorio.crud.ClasseDeAnaliseAction" method="delete">
      <result name="success" type="redirect">list.action</result>
    </action>
  </package>
  
</xwork>

/**
 * 
 */
package com.bna.salus.actions.laboratorio.crud;

import java.util.Collection;

import com.bna.salus.actions.laboratorio.LaboratorioAction;
import com.bna.salus.dao.DAO;
import com.bna.salus.dao.DAOException;
import com.bna.salus.dao.DAOFactory;
import com.bna.salus.dao.laboratorio.HibernateClasseDeAnaliseDAO;
import com.bna.salus.model.laboratorio.ClasseDeAnalise;
import com.bna.salus.util.security.SegurancaDeAcesso;
import com.opensymphony.xwork.Action;

public class ClasseDeAnaliseAction extends LaboratorioAction {
	private static final long serialVersionUID = 1L;

	private DAO dAO = DAOFactory.getHibernateDAOFactory().getClasseDeAnaliseDAO();
	private DAO classeDeAnaliseDAO = new HibernateClasseDeAnaliseDAO();
	
	private ClasseDeAnalise classeDeAnalise;
	private Collection analises = null;

 	public ClasseDeAnaliseAction(){
		getPerfil().addPerfil(SegurancaDeAcesso.LABORATORIO);
	}
	
	/**
	 * @return Returns the classeDeAnalise.
	 */
	public ClasseDeAnalise getClasseDeAnalise() {
		return classeDeAnalise;
	}

	/**
	 * @param classeDeAnalise The classeDeAnalise to set.
	 */
	public void setClasseDeAnalise(ClasseDeAnalise classeDeAnalise) {
		this.classeDeAnalise = classeDeAnalise;
	}

	/**
	 * @see com.opensymphony.xwork.Action#execute()
	 */
	public String execute() throws Exception {
		return Action.SUCCESS;
	}

	public String list() throws Exception {
		analises = dAO.list();
		return Action.SUCCESS;
	}

	public String load() throws Exception {
		if (classeDeAnalise!= null && (classeDeAnalise).getId() != null) {
			classeDeAnalise =  (ClasseDeAnalise) dAO.load(classeDeAnalise.getId());
		}

		return Action.SUCCESS;
	}

	public String save() throws Exception {
		ClasseDeAnalise classeDeAnalise = this.classeDeAnalise;
		dAO.saveOrUpdate(classeDeAnalise, classeDeAnalise.getId());

		return Action.SUCCESS;
	}

	public String delete() throws Exception {
		this.load();
		dAO.delete(this.getClasseDeAnalise());

		return Action.SUCCESS;
	}

	/**
	 * @return Returns the analises.
	 * @throws DAOException 
	 */
	public Collection getAnalises() throws DAOException {
		if (analises == null) {
			// com.bna.salus.model.laboratorio
			this.analises = dAO.list();
		}

		return analises;
	}

	/**
	 * @param analises The analises to set.
	 */
	public void setAnalises(Collection analises) {
		this.analises = analises;
	}

}