JBoss HelloWorld Beantragung nicht starten

Hi,

Ich versuche zu starten JBoss Beispiel-Anwendung "jboss-as-helloworld'.
Und bekam solche Ausnahme:

16:23:51,118 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-1) Starting deployment of "jboss-as-helloworld.war"
16:23:51,176 INFO  [org.jboss.weld] (MSC service thread 1-5) Processing CDI deployment: jboss-as-helloworld.war
16:23:51,178 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-5) MSC00001: Failed to start service jboss.deployment.unit."jboss-as-helloworld.war".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.unit."jboss-as-helloworld.war".INSTALL: Failed to process phase INSTALL of deployment "jboss-as-helloworld.war"
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1765)
    at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [:1.7.0_02]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [:1.7.0_02]
    at java.lang.Thread.run(Thread.java:722) [:1.7.0_02]
Caused by: org.jboss.msc.service.DuplicateServiceException: Service jboss.naming.context.java.app.jboss-as-helloworld is already registered
    at org.jboss.msc.service.ServiceRegistrationImpl.setInstance(ServiceRegistrationImpl.java:154)
    at org.jboss.msc.service.ServiceControllerImpl.startInstallation(ServiceControllerImpl.java:226)
    at org.jboss.msc.service.ServiceContainerImpl.install(ServiceContainerImpl.java:560)
    at org.jboss.msc.service.ServiceTargetImpl.install(ServiceTargetImpl.java:201)
    at org.jboss.msc.service.ServiceControllerImpl$ChildServiceTarget.install(ServiceControllerImpl.java:2194)
    at org.jboss.msc.service.ServiceTargetImpl.install(ServiceTargetImpl.java:201)
    at org.jboss.msc.service.ServiceControllerImpl$ChildServiceTarget.install(ServiceControllerImpl.java:2194)
    at org.jboss.msc.service.ServiceBuilderImpl.install(ServiceBuilderImpl.java:307)
    at org.jboss.as.ee.naming.ApplicationContextProcessor.deploy(ApplicationContextProcessor.java:62)
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115)
    ... 5 more

16:23:51,180 INFO  [org.jboss.as.server.controller] (DeploymentScanner-threads - 2) Deployment of "jboss-as-helloworld.war" was rolled back with failure message {"Failed services" => {"jboss.deployment.unit.\"jboss-as-helloworld.war\".INSTALL" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"jboss-as-helloworld.war\".INSTALL: Failed to process phase INSTALL of deployment \"jboss-as-helloworld.war\""}}
16:23:51,191 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-2) Stopped deployment jboss-as-helloworld.war in 10ms
16:23:51,192 ERROR [org.jboss.as.deployment] (DeploymentScanner-threads - 1) {"Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-2" => {"Failed services" => {"jboss.deployment.unit.\"jboss-as-helloworld.war\".INSTALL" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"jboss-as-helloworld.war\".INSTALL: Failed to process phase INSTALL of deployment \"jboss-as-helloworld.war\""}}}}

JBoss 7.0 Runtime-Server gestartet und ich kann auf JBoss-Startseite http://localhost:8080 - und JBoss-Konsole.

Ich nicht ändern code oder xml, ist alles Standard.
Sagen Sie mir, wenn es ist, müssen zusätzliche info, um dieses Problem zu untersuchen.