Pasting it here:

2012-01-23 15:03:21,928 ERROR [WorkerThread#0[ip:port]] (rhq.core.pc.inventory.InventoryManager)- Manual add failed for resource of type [Process] and parent resource id [10295]
java.lang.reflect.UndeclaredThrowableException
    at $Proxy75.discoverResource(Unknown Source)
    at org.rhq.core.pc.inventory.InventoryManager.discoverResource(InventoryManager.java:352)
    at org.rhq.core.pc.inventory.InventoryManager.manuallyAddResource(InventoryManager.java:684)
    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.rhq.enterprise.communications.command.impl.remotepojo.server.RemotePojoInvocationCommandService.execute(RemotePojoInvocationCommandService.java:184)
    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 com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(Unknown Source)
    at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(Unknown Source)
    at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(Unknown Source)
    at com.sun.jmx.mbeanserver.PerInterface.invoke(Unknown Source)
    at com.sun.jmx.mbeanserver.MBeanSupport.invoke(Unknown Source)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
    at javax.management.MBeanServerInvocationHandler.invoke(Unknown Source)
    at $Proxy0.execute(Unknown Source)
    at org.rhq.enterprise.communications.command.server.CommandProcessor.handleIncomingInvocationRequest(CommandProcessor.java:290)
    at org.rhq.enterprise.communications.command.server.CommandProcessor.invoke(CommandProcessor.java:184)
    at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:809)
    at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:608)
    at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:406)
    at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:173)
Caused by: java.lang.Exception: Discovery component invocation failed.
    at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ComponentInvocationThread.call(DiscoveryComponentProxyFactory.java:296)
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Failed to create process based on plugin config: Configuration[id=0]
    at org.rhq.plugins.platform.ProcessDiscoveryComponent.discoverResource(ProcessDiscoveryComponent.java:55)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ComponentInvocationThread.call(DiscoveryComponentProxyFactory.java:292)
    ... 5 more