MyFaces not working

[kks_krishna]

HI,

I am using JBoss 4.2.3 and MyFaces 1.1.5. I have disabled the Sun's JSF RI bundled with JBoss. I am getting the following exception while trying to access the JSF page. I am accesing as "index.faces". mappings areb done properly. Please help me.

08:07:27,935 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.RuntimeException: Cannot find FacesContext
 at javax.faces.webapp.UIComponentClassicTagBase.getFacesContext(UIComponentClassicTagBase.java:1855)
 at javax.faces.webapp.UIComponentClassicTagBase.setJspId(UIComponentClassicTagBase.java:1672)
 at org.apache.jsp.index_jsp._jspx_meth_f_005fview_005f0(index_jsp.java:95)
 at org.apache.jsp.index_jsp._jspService(index_jsp.java:69)
 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
 at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:445)
 at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
 at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
 at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:419)
 at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:211)
 at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
 at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain