This sounds weird I know, but I had jboss-3.0.1_tomcat-4.0.4 running fine on nt4. I installed visual studio.net and when i try to startup the server i get the following message.

19:28:45,068 ERROR [Server] start failed
org.jboss.deployment.DeploymentException: instantiating org.jboss.logging.Log4jS
ervice failed: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMBeanSupp
ort; - nested throwable: (RuntimeErrorException: instantiating org.jboss.logging
.Log4jService failed: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMB
eanSupport
Cause: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMBeanSupport)
at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java
:155)
at org.jboss.system.ServiceController.install(ServiceController.java:224
)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
at org.jboss.util.jmx.MBeanProxy.invoke(MBeanProxy.java:174)
at $Proxy3.install(Unknown Source)
at org.jboss.deployment.SARDeployer.create(SARDeployer.java:209)
at org.jboss.deployment.MainDeployer.create(MainDeployer.java:749)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:615)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:580)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:564)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
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:142)
at org.jboss.Main$1.run(Main.java:375)
at java.lang.Thread.run(Thread.java:479)
+ nested throwable:
RuntimeErrorException: instantiating org.jboss.logging.Log4jService failed: java
.lang.NoClassDefFoundError: org/jboss/system/ServiceMBeanSupport
Cause: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMBeanSupport
at org.jboss.mx.server.MBeanServerImpl.handleInstantiateExceptions(MBean
ServerImpl.java:857)
at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:
790)
at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:
240)
at org.jboss.mx.server.MBeanServerImpl.createMBean(MBeanServerImpl.java:
267)
at org.jboss.system.ServiceCreator.install(ServiceCreator.java:86)
at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigura
tor.java:167)
at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java
:130)
at org.jboss.system.ServiceController.install(ServiceController.java:224
)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
at org.jboss.util.jmx.MBeanProxy.invoke(MBeanProxy.java:174)
at $Proxy3.install(Unknown Source)
at org.jboss.deployment.SARDeployer.create(SARDeployer.java:209)
at org.jboss.deployment.MainDeployer.create(MainDeployer.java:749)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:615)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:580)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:564)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
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:142)
at org.jboss.Main$1.run(Main.java:375)
at java.lang.Thread.run(Thread.java:479)
org.jboss.deployment.DeploymentException: instantiating org.jboss.logging.Log4jS
ervice failed: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMBeanSupp
ort; - nested throwable: (RuntimeErrorException: instantiating org.jboss.logging
.Log4jService failed: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMB
eanSupport
Cause: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMBeanSupport)
at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java
:155)
at org.jboss.system.ServiceController.install(ServiceController.java:224
)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
at org.jboss.util.jmx.MBeanProxy.invoke(MBeanProxy.java:174)
at $Proxy3.install(Unknown Source)
at org.jboss.deployment.SARDeployer.create(SARDeployer.java:209)
at org.jboss.deployment.MainDeployer.create(MainDeployer.java:749)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:615)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:580)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:564)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
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:142)
at org.jboss.Main$1.run(Main.java:375)
at java.lang.Thread.run(Thread.java:479)
+ nested throwable: RuntimeErrorException: instantiating org.jboss.logging.Log4
jService failed: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMBeanSu
pport
Cause: java.lang.NoClassDefFoundError: org/jboss/system/ServiceMBeanSupport
at org.jboss.mx.server.MBeanServerImpl.handleInstantiateExceptions(MBean
ServerImpl.java:857)
at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:
790)
at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:
240)
at org.jboss.mx.server.MBeanServerImpl.createMBean(MBeanServerImpl.java:
267)
at org.jboss.system.ServiceCreator.install(ServiceCreator.java:86)
at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigura
tor.java:167)
at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java
:130)
at org.jboss.system.ServiceController.install(ServiceController.java:224
)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
at org.jboss.util.jmx.MBeanProxy.invoke(MBeanProxy.java:174)
at $Proxy3.install(Unknown Source)
at org.jboss.deployment.SARDeployer.create(SARDeployer.java:209)
at org.jboss.deployment.MainDeployer.create(MainDeployer.java:749)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:615)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:580)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:564)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:491)
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:142)
at org.jboss.Main$1.run(Main.java:375)
at java.lang.Thread.run(Thread.java:479)
19:28:46,340 INFO [Server] Undeploying all packages



I have even reinstalled jboss, with the same results, and checked the path & classpaths but they do not appear altered

Any ideas appreciated.