JSF/Tiles: [java.lang.ClassNotFoundException: org.apache.tiles.servlets.Til

Question

Hi,
I am working on JSF1.2 in SAP NetWeaver CE and I am using Tiles. Please help me to resolve the following issues.
~~~~~~~~~~~~~~~~~~~
1. File:G:\ws_wd\ce_ws.jdi\LocalDevelopment\DCs\demo.sap.com\lbsjsf\ear\_comp\gen\default\deploy\demo.sap.com~lbsjsf~ear.ear
     Name:lbsjsf~ear
     Vendor:demo.sap.com
     Location:localDevelopment
     Version:20090402105707
     Deploy status:Warning
     Version:NEW
     Description:
          1. Warning occurred on server 4585250 during deploy demo.sap.com/lbsjsf~ear : Web Class Existence Test: servlet class "org.apache.tiles.servlets.TilesServlet" cannot be found in the application class path. Possible reasons: 1) package or class name not correct; 2) missing referenced component (application or library); 3) missing reference to component (application or library)., file: demo.sap.com~lbsjsf~web.war#WEB-INF/web.xml, column 0, line 0, severity: warning
Warning occurred on server 4585250 during deploy demo.sap.com/lbsjsf~ear : Web Class Existence Test: The servlet "com.cg.lbs.ui.controller.StartupConfigurationServlet" must implement "javax.servlet.Servlet"., file: demo.sap.com~lbsjsf~web.war#WEB-INF/web.xml, column 0, line 0, severity: warning
          2. Warning exception has been returned while the 'demo.sap.com/lbsjsf~ear' was starting. Warnings:
Warning occurred on server 4585250 during startApp demo.sap.com/lbsjsf~ear : Cannot load servlet [org.apache.tiles.servlets.TilesServlet]. Error is: [java.lang.ClassNotFoundException: org.apache.tiles.servlets.TilesServlet
------------------------- Loader Info -------------------------
ClassLoader name: [demo.sap.com/lbsjsf~ear]
Living status: alive
Direct parent loaders:
[system:Frame]
[service:servlet_jsp]
[service:ejb]
Resources:
F:\usr\sap\CE1\J00\j2ee\cluster\apps\demo.sap.com\lbsjsf~ear\servlet_jsp\lbsjsf\root\WEB-INF\classes
++++++++++++++below is my web.xml+++++++++
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="http://java.sun.com/xml/ns/javaee"
     xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
     id="WebApp_ID" version="2.5">
     <display-name>
          LocalDevelopment~LocalDevelopment~lbsjsf(2fweb~demo.sap.com
     </display-name>
     <filter>
          <filter-name>MyFacesExtensionsFilter</filter-name>
          <filter-class>
               org.apache.myfaces.webapp.filter.ExtensionsFilter
          </filter-class>
          <init-param>
               <param-name>maxFileSize</param-name>
               <param-value>20m</param-value>
          </init-param>
     </filter>
     <!-- extension mapping for adding <script/>, <link/>, and other resource tags to JSF-pages -->
     <filter-mapping>
          <filter-name>MyFacesExtensionsFilter</filter-name>
          <!-- servlet-name must match the name of your javax.faces.webapp.FacesServlet entry -->
          <servlet-name>Faces Servlet</servlet-name>
     </filter-mapping>
     <!-- extension mapping for serving page-independent resources (javascript, stylesheets, images, etc.) -->
     <filter-mapping>
          <filter-name>MyFacesExtensionsFilter</filter-name>
          <url-pattern>/faces/myFacesExtensionResource/*</url-pattern>
     </filter-mapping>
     <!-- extension mapping for adding <script/>, <link/>, and other resource tags to JSF-pages -->
     <filter-mapping>
          <filter-name>MyFacesExtensionsFilter</filter-name>
          <url-pattern>*.jsf</url-pattern>
     </filter-mapping>
     <servlet>
          <servlet-name>Tiles Servlet</servlet-name>
          <servlet-class>
               org.apache.tiles.servlets.TilesServlet
          </servlet-class>
          <init-param>
               <param-name>definitions-config</param-name>
               <param-value>/WEB-INF/tiles.xml</param-value>
          </init-param>
          <load-on-startup>3</load-on-startup>
     </servlet>
     <servlet>
          <servlet-name>Faces Servlet</servlet-name>
          <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
          <load-on-startup>2</load-on-startup>
     </servlet>
     <servlet>
          <servlet-name>StartupConfiguration</servlet-name>
          <servlet-class>
               com.cg.lbs.ui.controller.StartupConfigurationServlet
          </servlet-class>
          <init-param>
               <param-name>log4j-init-file</param-name>
               <param-value>sswblog4j.xml</param-value>
          </init-param>
          <load-on-startup>1</load-on-startup>
     </servlet>
     <servlet-mapping>
          <servlet-name>Faces Servlet</servlet-name>
          <url-pattern>*.faces</url-pattern>
     </servlet-mapping>
     <welcome-file-list>
          <welcome-file>index.html</welcome-file>
     </welcome-file-list>
</web-app>

Answer 1

That's a pretty decent error message. Have you eliminated the potential causes which were listed in the message?