500 Internal Server Error

java.lang.ClassCastException
at _web_2d_inf._renderers._category._redirect._jspService(_redirect.java:95)
[SRC:/WEB-INF/renderers/category/redirect.jsp:11]
at com.orionserver[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:356)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:498)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:402)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:674)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:341)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:230)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1062)
at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:263)
at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386)
at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:318)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
at gr.nomarxies.applications.struts.StrutsLocaleFilter.doFilter(StrutsLocaleFilter.java:36)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
at instore.hibernate.HibernateSessionFilter.doFilter(HibernateSessionFilter.java:24)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
at instore.waf.utils.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:170)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:670)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:341)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:816)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:231)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:136)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.3.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
at java.lang.Thread.run(Thread.java:534)