Problema con apache tomcat 6.0 en eclipse

[Erik Palma]

este error solo me sale en mi portatil... en la otra funciona todo normal
Favor alguna posible solucion
INFO: Starting Servlet Engine: Apache Tomcat/6.0.10
18/12/2007 12:48:04 PM org.apache.catalina.core.ApplicationContext log
GRAVE: StandardWrapper.Throwable
java.lang.NullPointerException
at javax.faces.webapp.FacesServlet.init(FacesServlet. java:165)
at org.apache.catalina.core.StandardWrapper.loadServl et(StandardWrapper.java:1161)
at org.apache.catalina.core.StandardWrapper.load(Stan dardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnSta rtup(StandardContext.java:4044)
at org.apache.catalina.core.StandardContext.start(Sta ndardContext.java:4350)
at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1015)
at org.apache.catalina.core.StandardHost.start(Standa rdHost.java:719)
at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1015)
at org.apache.catalina.core.StandardEngine.start(Stan dardEngine.java:443)
at org.apache.catalina.core.StandardService.start(Sta ndardService.java:448)
at org.apache.catalina.core.StandardServer.start(Stan dardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalin a.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootst rap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstr ap.java:413)
18/12/2007 12:48:04 PM org.apache.catalina.core.StandardContext loadOnStartup
GRAVE: El Servlet /gen_modelo lanzó excepción de load()
java.lang.NullPointerException
at javax.faces.webapp.FacesServlet.init(FacesServlet. java:165)
at org.apache.catalina.core.StandardWrapper.loadServl et(StandardWrapper.java:1161)
at org.apache.catalina.core.StandardWrapper.load(Stan dardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnSta rtup(StandardContext.java:4044)
at org.apache.catalina.core.StandardContext.start(Sta ndardContext.java:4350)
at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1015)
at org.apache.catalina.core.StandardHost.start(Standa rdHost.java:719)
at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1015)
at org.apache.catalina.core.StandardEngine.start(Stan dardEngine.java:443)
at org.apache.catalina.core.StandardService.start(Sta ndardService.java:448)
at org.apache.catalina.core.StandardServer.start(Stan dardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalin a.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootst rap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstr ap.java:413)
18/12/2007 12:48:04 PM org.apache.coyote.http11.Http11Protocol start
INFO: Arrancando Coyote HTTP/1.1 en puerto http-8081
18/12/2007 12:48:04 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
18/12/2007 12:48:04 PM org.apache.jk.server.JkMain start

gracias