关于websphere出现的问题求助，大侠们帮忙啊

我在一个项目，要将应用程序从jetspeed上移植到websphere6.1上去，其中有的portlet可以加上去，但是没有内容，也就是没有找到jsp的路径，看了systemout.log的记录，有如下的错误：
[5/22/09 5:50:03:499 PDT] 0000003e ServletWrappe E   SRVE0068E: Uncaught exception thrown in one of the service methods of the servlet: /jsp/CVOS1/radReport.jsp. Exception thrown : java.lang.ClassCastException: org.springframework.web.servlet.support.JstlUtils$SpringLocalizationContext incompatible with java.lang.String
at org.apache.taglibs.standard.tag.common.fmt.BundleSupport.getLocalizationContext(BundleSupport.java:137)
at org.apache.taglibs.standard.tag.common.fmt.SetLocaleSupport.getFormattingLocale(SetLocaleSupport.java:255)
at org.apache.taglibs.standard.tag.common.fmt.FormatDateSupport.doEndTag(FormatDateSupport.java:116)
at com.ibm._jsp._radReport._jspx_meth_fmt_formatDate_0(_radReport.java:227)
at com.ibm._jsp._radReport._jspx_meth_c_forEach_0(_radReport.java:272)
at com.ibm._jsp._radReport._jspService(_radReport.java:106)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1096)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1037)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:118)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:832)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:679)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:566)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:122)
at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:226)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:639)
at com.ibm.ws.portletcontainer.core.impl.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:98)
at com.ibm.ws.portletcontainer.core.impl.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:230)
at net.carefx.salesdemo.portal.portlets.CfxSimplePortlet.processJSP(CfxSimplePortlet.java:62)
at net.carefx.salesdemo.portal.portlets.CfxSimplePortlet.doView(CfxSimplePortlet.java:49)
at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:328)
at net.carefx.salesdemo.portal.portlets.CommonPortlet.doDispatch(CommonPortlet.java:91)
at javax.portlet.GenericPortlet.render(GenericPortlet.java:233)
at net.carefx.portalenabler.portlet.ContextPortlet.render(ContextPortlet.java:809)
at com.ibm.ws.portletcontainer.invoker.impl.PortletServlet.doDispatch(PortletServlet.java:576)
at com.ibm.ws.portletcontainer.invoker.impl.PortletServletCollaboratorChainImpl.doCollaborator(PortletServletCollaboratorChainImpl.java:114)
    
         。请高手们帮忙啊，有谁遇到过类似的问题，可以给点建议啊，小弟谢谢啦！
补充：那些可以显示的portlet的jsp都是在java文件中写死的，这几个出现问题的portlet的jsp路径都是通过<init-name>配置在portlet.xml中的。