Problem using Turbine avalon component

[Federico Piccinin]

I've read   avalon Component Service  documentation but i don't 
understand why don't work so, after a lot of debug this is the result:

java.lang.NullPointerException
       at 
org.apache.avalon.excalibur.component.DefaultRoleManager.getRoleForName(DefaultRoleManager.java:123)
       at 
org.apache.avalon.excalibur.component.ExcaliburComponentManager.configure(ExcaliburComponentManager.java:457)

       at 
org.apache.turbine.services.avaloncomponent.TurbineAvalonComponentService.initialize(TurbineAvalonComponentSe
rvice.java:222)
       at 
org.apache.turbine.services.avaloncomponent.TurbineAvalonComponentService.init(TurbineAvalonComponentService.
java:135)
       at 
org.apache.turbine.services.BaseServiceBroker.initService(BaseServiceBroker.java:321)
       at 
org.apache.turbine.services.BaseServiceBroker.doInitService(BaseServiceBroker.java:401)
       at 
org.apache.turbine.services.BaseServiceBroker.initServices(BaseServiceBroker.java:373)
       at 
org.apache.turbine.services.BaseServiceBroker.init(BaseServiceBroker.java:190)
       at org.apache.turbine.Turbine.configure(Turbine.java:423)
       at org.apache.turbine.Turbine.init(Turbine.java:230)
       at javax.servlet.GenericServlet.init(GenericServlet.java:256)
       at 
org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:935)
       at 
org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:823)
       at 
org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3422)
       at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:3623)
       at 
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1188)
       at 
org.apache.catalina.core.StandardHost.start(StandardHost.java:754)
       at 
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1188)
       at 
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:363)
       at 
org.apache.catalina.core.StandardService.start(StandardService.java:497)
       at 
org.apache.catalina.core.StandardServer.start(StandardServer.java:2190)
       at org.apache.catalina.startup.Catalina.start(Catalina.java:512)
       at org.apache.catalina.startup.Catalina.execute(Catalina.java:400)
       at org.apache.catalina.startup.Catalina.process(Catalina.java:180)
       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:324)
       at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:203)

answers :

   * could you give me the list of jars to include in my project
   * can you send me an example of turbine.properties and other
     configuration file that are good (repeat good; no shuld be work
     but i don't know)
doing this you give me a gift !!

hello