进入不了WebSphere管理界面？

请问有谁对WebSphere管理比较熟悉的？请帮帮忙。

进入管理界面的时候出错了：
错误 500
处理请求时发生一个错误： /admin cure curelogon.do
消息：
java.lang.NullPointerException
        at org.apache.jsp._console._jspService(_console.java:172)
        at com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase.service(HttpJspBase.java:89)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java:257)
        at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java:250)
        at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java:141)
        at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java:239)
        at com.ibm.ws.webcontainer.jsp.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:344)
        at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.serviceJspFile(JspServlet.java:683)
        at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.service(JspServlet.java:781)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
        at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
        at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
        at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
        at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
        at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
        at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
        at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:1171)
        at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:676)
        at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:203)
        at org.apache.struts.tiles.ActionComponentServlet.processForward(ActionComponentServlet.java:295)
        at org.apache.struts.tiles.ActionComponentServlet.processActionForward(ActionComponentServlet.java:104)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1596)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:510)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java:257)
        at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java:250)
        at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java:141)
        at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java:239)
        at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
        at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
        at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
        at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
        at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
        at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
        at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
        at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:1171)
        at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:676)
        at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:203)
        at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:125)
        at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:294)
        at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
        at com.ibm.ws.webcontainer.cache.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:116)
        at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:186)
        at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
        at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
        at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:652)
        at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:448)
        at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:912)

之前一直都是可以的。 重启了dmgr也不行，我用的是ND环境。

有谁知道是怎么回事吗？ 谢谢！

帮不了你，俺玩不了，替你顶一下吧

was我很熟悉
500是w网页不存在
检查was的状态
检查的was的application是否可用

500不是内部服务器错误？...
那错误在windows作server的时候见过

请做：清空IE cookies，删除文件，清除历史记录一系列操作，然后建议使用MS IE