NPE during deploying WAR

SourceForge Submitter: vkorenev .
OS: Win2000
JDK: 1.4.1-rc
JBoss v. 3.0.3 with Jetty

An error occures when JBoss starts:

10:03:37,396 ERROR [URLDeploymentScanner]
Failed to deploy: org.jboss.deployment
.scanner.URLDeploymentScanner$DeployedURL@64
67598e

{ url=file:/D:/java/jboss-3.0. 3/server/default/deploy/cboss.ear/, deployedLastModified=0 }

org.jboss.deployment.DeploymentException: -
nested throwable: (java.lang.NullPoi
nterException)
at org.jboss.jetty.Jetty.deploy(Jetty.java:434)
at org.jboss.jetty.JettyService.performDeploy
(JettyService.java:243)
at org.jboss.web.AbstractWebContainer.start
(AbstractWebContainer.java:30
0)
at org.jboss.deployment.MainDeployer.start
(MainDeployer.java:802)
at org.jboss.deployment.MainDeployer.start
(MainDeployer.java:794)
at org.jboss.deployment.MainDeployer.deploy
(MainDeployer.java:616)
at org.jboss.deployment.MainDeployer.deploy
(MainDeployer.java:580)
at
sun.reflect.GeneratedMethodAccessor9.invoke
(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke
(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.i
nvoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke
(MBeanServerImpl.java:517)
at org.jboss.util.jmx.MBeanProxy.invoke
(MBeanProxy.java:174)
at $Proxy4.deploy(Unknown Source)
at
org.jboss.deployment.scanner.URLDeploymentScann
er.deploy(URLDeploymen
tScanner.java:427)
at
org.jboss.deployment.scanner.URLDeploymentScann
er.scanDirectory(URLDe
ploymentScanner.java:648)
at
org.jboss.deployment.scanner.URLDeploymentScann
er.scan(URLDeploymentS
canner.java:499)
at
org.jboss.deployment.scanner.AbstractDeploymentS
canner.startService(A
bstractDeploymentScanner.java:261)
at org.jboss.system.ServiceMBeanSupport.start
(ServiceMBeanSupport.java:1
64)
at
sun.reflect.GeneratedMethodAccessor7.invoke
(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke
(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.i
nvoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke
(MBeanServerImpl.java:517)
at
org.jboss.system.ServiceController$ServiceProxy.inv
oke(ServiceControl
ler.java:976)
at $Proxy0.start(Unknown Source)
at org.jboss.system.ServiceController.start
(ServiceController.java:397)
at
sun.reflect.GeneratedMethodAccessor6.invoke
(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke
(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.i
nvoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke
(MBeanServerImpl.java:517)
at org.jboss.util.jmx.MBeanProxy.invoke
(MBeanProxy.java:174)
at $Proxy3.start(Unknown Source)
at org.jboss.deployment.SARDeployer.start
(SARDeployer.java:249)
at org.jboss.deployment.MainDeployer.start
(MainDeployer.java:802)
at org.jboss.deployment.MainDeployer.deploy
(MainDeployer.java:616)
at org.jboss.deployment.MainDeployer.deploy
(MainDeployer.java:580)
at org.jboss.deployment.MainDeployer.deploy
(MainDeployer.java:564)
at
sun.reflect.NativeMethodAccessorImpl.invoke0
(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.
java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke
(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.i
nvoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke
(MBeanServerImpl.java:517)
at org.jboss.system.server.ServerImpl.doStart
(ServerImpl.java:324)
at org.jboss.system.server.ServerImpl.start
(ServerImpl.java:221)
at org.jboss.Main.boot(Main.java:148)
at org.jboss.Main$1.run(Main.java:381)
at java.lang.Thread.run(Thread.java:536)
Caused by: java.lang.NullPointerException
at org.mortbay.j2ee.session.Manager.start
(Manager.java:159)
at org.mortbay.jetty.servlet.ServletHandler.start
(ServletHandler.java:40
9)
at
org.mortbay.jetty.servlet.WebApplicationHandler.sta
rt(WebApplicationH
andler.java:142)
at org.mortbay.http.HttpContext.startHandlers
(HttpContext.java:1780)
at
org.jboss.jetty.JBossWebApplicationContext.startHan
dlers(JBossWebAppl
icationContext.java:280)
at org.mortbay.http.HttpContext.start
(HttpContext.java:1750)
at
org.mortbay.jetty.servlet.WebApplicationContext.sta
rt(WebApplicationC
ontext.java:471)
at
org.mortbay.j2ee.J2EEWebApplicationContext.start
(J2EEWebApplicationCo
ntext.java:85)
at org.jboss.jetty.Jetty.deploy(Jetty.java:412)
... 49 more