When i integrate tiles with
struts its giving the following error
Error Page
The following java.lang.NullPointerException Occured
Exception occured in the following place
java.lang.NullPointerException
at org.apache.struts.taglib.tiles.InsertTag.processAttribute(InsertTag.java:689)
at org.apache.struts.taglib.tiles.InsertTag.createTagHandler(InsertTag.java:489)
at org.apache.struts.taglib.tiles.InsertTag.doStartTag(InsertTag.java:451)
at _jsp._cts_2d_web._jspService(cts-web.jsp:20)
at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:57)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:347)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:649)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:322)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
at java.lang.Thread.run(Thread.java:534)
Help me please..............