Java - Error al iniciar tomcat

Buenas me tira este error el iniciar el tomcat. Y no se mucho del tema de configuracion, si algien me peude dar una mano de lo agradeceria.

error:

javax.naming.NamingException: C:\tomcat-5.0.28\conf\tomcat-users.xml.new (El sistema no puede hallar la ruta especificada)
at org.apache.naming.NamingContext.lookup(NamingContext.java:803)
at org.apache.naming.NamingContext.lookup(NamingContext.java:151)
at org.apache.catalina.realm.UserDatabaseRealm.start(UserDatabaseRealm.java:252)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1075)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
at org.apache.catalina.core.StandardService.start(StandardService.java:480)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
19-feb-2007 16:28:08 org.apache.catalina.startup.Catalina start
GRAVE: Catalina.start:
LifecycleException: No se ha hallado componente de Base de datos de Usuario mediante la clave UserDatabase
at org.apache.catalina.realm.UserDatabaseRealm.start(UserDatabaseRealm.java:259)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1075)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
at org.apache.catalina.core.StandardService.start(StandardService.java:480)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)

Gracias de antemano