Checking if Java exists
java -version returned 1.7.0.
Copying jenkins-slave.xml
Copying slave.jar
Starting the service
ERROR: Unexpected error in launching an agent. This is probably a bug in Jenkins
java.lang.reflect.UndeclaredThrowableException
	at com.sun.proxy.$Proxy42.start(Unknown Source)
	at hudson.os.windows.ManagedWindowsServiceLauncher.launch(ManagedWindowsServiceLauncher.java:334)
	at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:261)
	at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
	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.kohsuke.jinterop.JInteropInvocationHandler.invoke(JInteropInvocationHandler.java:140)
	... 8 more
Caused by: org.jinterop.dcom.common.JIException: Service Already Running
	at org.jvnet.hudson.wmi.Win32Service$Implementation.start(Win32Service.java:149)
	... 13 more