TOMCAT启动问题

在myeclipse中启动tomcat的时候会出现以下问题，求助，哪位帮忙解决一下啊，谢谢！


2008-9-13 15:38:27 org.apache.catalina.startup.Catalina load
警告: Can't load server.xml from /usr/local/apache-tomcat-5.5.25/conf/server.xml
2008-9-13 15:38:27 org.apache.catalina.startup.Catalina load
警告: Can't load server.xml from /usr/local/apache-tomcat-5.5.25/conf/server.xml
2008-9-13 15:38:27 org.apache.catalina.startup.Catalina start
信息: Server startup in 0 ms
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: java.lang.NullPointerException
at org.apache.catalina.startup.Catalina.await(Catalina.java:616)
at org.apache.catalina.startup.Catalina.start(Catalina.java:576)
... 6 more