a simple application error

[Herendi Kristóf Pál]

Hello to whom is reading this mail,

I have decided to learn Red5, i wrote a little script (from a
tutorial) but i have an error and cant find my problem.
This is the log from Tomcat:

2011.07.10. 18:00:32 org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
2011.07.10. 18:00:32 org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
2011.07.10. 18:02:10 org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextDestroyed()
2011.07.10. 18:02:10 org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextDestroyed()
2011.07.10. 18:02:11 org.apache.catalina.core.ApplicationContext log
SEVERE: Servlet rtmpt threw unload() exception
javax.servlet.ServletException: Servlet.destroy() for servlet rtmpt
threw exception
at
org.apache.catalina.core.StandardWrapper.unload(StandardWrapper.java:
1413)
at org.apache.catalina.core.StandardWrapper.stop(StandardWrapper.java:
1739)
at org.apache.catalina.core.StandardContext.stop(StandardContext.java:
4601)
at
org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:
924)
at
org.apache.catalina.startup.HostConfig.undeployApps(HostConfig.java:
1319)
at org.apache.catalina.startup.HostConfig.stop(HostConfig.java:1290)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:
323)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:
119)
at org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:
1086)
at org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:
1098)
at org.apache.catalina.core.StandardEngine.stop(StandardEngine.java:
448)
at org.apache.catalina.core.StandardService.stop(StandardService.java:
584)
at org.apache.catalina.core.StandardServer.stop(StandardServer.java:
744)
at org.apache.catalina.startup.Catalina.stop(Catalina.java:643)
at org.apache.catalina.startup.Catalina.start(Catalina.java:618)
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:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.NullPointerException
at org.red5.server.net.rtmpt.RTMPTServlet.destroy(RTMPTServlet.java:
498)
at
org.apache.catalina.core.StandardWrapper.unload(StandardWrapper.java:
1394)
... 20 more

Do you have any suggestions how to solve my problem?