莫名问题，请大家指教

cuimeng78

JSF+SPRING+IBATIS开发的项目，在TOMCAT5.0.28下发布正常，在其他TOMCAT版本中发布产生错误。
严重: StandardWrapper.Throwable
java.lang.NullPointerException
        at javax.faces.webapp.FacesServlet.init(FacesServlet.java:144)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139)
        at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:791)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:127)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:52
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
        at java.lang.Thread.run(Thread.java:595)
2007-4-12 8:37:11 org.apache.catalina.core.StandardWrapperValve invoke
严重: Allocate exception for servlet Faces Servlet
java.lang.NullPointerException
        at javax.faces.webapp.FacesServlet.init(FacesServlet.java:144)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139)
        at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:791)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:127)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:52
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
        at java.lang.Thread.run(Thread.java:595)
2007-4-12 8:42:47 org.apache.catalina.core.ApplicationContext log
严重: StandardWrapper.Throwable
java.lang.NullPointerException
        at javax.faces.webapp.FacesServlet.init(FacesServlet.java:144)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139)
        at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:791)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:127)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:52
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
        at java.lang.Thread.run(Thread.java:595)
2007-4-12 8:42:47 org.apache.catalina.core.StandardWrapperValve invoke
严重: Allocate exception for servlet Faces Servlet
java.lang.NullPointerException
        at javax.faces.webapp.FacesServlet.init(FacesServlet.java:144)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139)
        at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:791)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:127)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:52
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
        at java.lang.Thread.run(Thread.java:595)