用ant生成mysql数据库，启动jbpm-starters-kit-3.1.4自带的服务，进入页面可以顺利的跑完流程，把F:\jbpm-starters-kit-3.1.4\jbpm\src\process.examples\websale.par在eclipse重新发布，ernie用户登录，点击ok时出错
javax.servlet.ServletException: Error calling action method of component with id taskform:transitionButton
javax.faces.webapp.FacesServlet.service(FacesServlet.java:109)
org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)
org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
root cause
javax.faces.FacesException: Error calling action method of component with id taskform:transitionButton
org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
javax.faces.component.UICommand.broadcast(UICommand.java:106)
javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164)
org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:271)
org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:94)
org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)
org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
------解决方案--------------------------------------------------------
eclipse 插件和jbpm的版本不对应