[ https://issues.jboss.org/browse/JBIDE-17668?page=com.atlassian.jira.plugi... ] Nero M commented on JBIDE-17668: -------------------------------- Hi, ive just tried to just start the JBoss Server 4.2.3 GA without any Projects. If the selection "Use workspace metadata (does not modify JBoss deploy folder)" is selected it seems to work, but when i select "Use the JBoss deploy folder" in the Deployment Tab of the Server runtime, the error occurrs. So to trigger we don't actually need any projects, this makes the bug finding more easy i guess. Note: You have to wait some seconds for the error to come 11:40:29,846 INFO [AjpAprProtocol] Starting Coyote AJP/1.3 on ajp-localhost%2F127.0.0.1-8009 11:40:29,856 INFO [Server] JBoss (MX MicroKernel) [4.2.3.GA (build: SVNTag=JBoss_4_2_3_GA date=200807181417)] Started in 8s:787ms 11:40:34,875 INFO [MainDeployer] Package: file:/C:/server/jboss/jboss-4.2.3/server/default/deploy/ejb3.deployer/jboss-annotations-ejb3.jar is already deployed 11:40:34,950 ERROR [MainDeployer] Could not create deployment: file:/C:/server/jboss/jboss-4.2.3/server/default/deploy/ejb3.deployer/ org.jboss.deployment.DeploymentException: Trying to install an already registered mbean: jboss.remoting:type=Connector,name=DefaultEjb3Connector,handler=ejb3 at org.jboss.system.ServiceCreator.install(ServiceCreator.java:103) at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigurator.java:451) at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:171) at org.jboss.system.ServiceController.install(ServiceController.java:226) at sun.reflect.GeneratedMethodAccessor23.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) at com.sun.proxy.$Proxy4.install(Unknown Sour -- This message was sent by Atlassian JIRA (v6.2.6#6264)