Unable to Undeploy Composite from SOA 11g (Doc ID 1415951.1)

[undeployComposite] INFO: Received HTTP response from the server, response code=500
[undeployComposite] ---->response code=500, error:There was an error undeploying composite on ETH_SOA1: Cannot find revision in undeploy : Composite!1.0..
[undeployComposite]

Error that I see in logs when I try undeployment via EM Console:
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<Feb 3, 2012 6:22:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy> <BEA-000000> <[Deployment] Undeploying reference: x failed for composite:x>
<Feb 3, 2012 6:22:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy> <BEA-000000> <[Deployment] Undeploying reference: x failed for composite:x>
<Feb 3, 2012 6:22:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy> <BEA-000000> <[Deployment] Undeploying reference: x failed for composite:x>
<Feb 3, 2012 6:22:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy> <BEA-000000> <[Deployment] Undeploying reference: x failed for composite:x>
<Feb 3, 2012 6:22:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy> <BEA-000000> <[Deployment] Undeploying reference: x failed for composite:x>
<Feb 3, 2012 6:22:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy> <BEA-000000> <[Deployment] Undeploying reference: x failed for composite:x>
<Feb 3, 2012 6:22:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy.coordinator> <BEA-000000> <Undeployed failed for: {0}>
<Feb 3, 2012 6:22:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy.coordinator> <BEA-000000> <Exception:
oracle.fabric.common.FabricDeploymentException {rootCauses=[oracle.fabric.common.FabricDeploymentException: [JCABinding] [x.x/1.0]Unable to complete unload due to: null {rootCauses=[]}, oracle.fabric.common.FabricDeploymentException: [JCABinding] [x.x/1.0]Unable to complete unload due to: null {rootCauses=[]}, oracle.fabric.common.FabricDeploymentException: [JCABinding] [x.x/1.0]Unable to complete unload due to: null {rootCauses=[]}, oracle.fabric.common.FabricDeploymentException: [JCABinding] [x.x/1.0]Unable to complete unload due to: null {rootCauses=[]}, oracle.fabric.common.FabricDeploymentException: [JCABinding] [x.x/1.0]Unable to complete unload due to: null {rootCauses=[]}, oracle.fabric.common.FabricDeploymentException: [JCABinding] [x.x/1.0]Unable to complete unload due to: null {rootCauses=[]}]}
at oracle.integration.platform.blocks.deploy.CompositeDeploymentConnection.undeploy(CompositeDeploymentConnection.java:131)
at oracle.integration.platform.blocks.deploy.CompositeDeploymentManagerImpl.initDeployment(CompositeDeploymentManagerImpl.java:152)
at oracle.integration.platform.blocks.deploy.CompositeDeploymentManagerImpl.undeploy(CompositeDeploymentManagerImpl.java:45)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at oracle.integration.platform.blocks.deploy.DeploymentEventPublisher.invoke(DeploymentEventPublisher.java:68)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy306.undeploy(Unknown Source)
at oracle.integration.platform.blocks.deploy.CoherenceCompositeDeploymentCoordinatorImpl.handleNewDeploymentCommand(CoherenceCompositeDeploymentCoordinatorImpl.java:594)
at oracle.integration.platform.blocks.deploy.CoherenceCompositeDeploymentCoordinatorImpl.access$200(CoherenceCompositeDeploymentCoordinatorImpl.java:33)
at oracle.integration.platform.blocks.deploy.CoherenceCompositeDeploymentCoordinatorImpl$2.entryInserted(CoherenceCompositeDeploymentCoordinatorImpl.java:137)
at com.tangosol.util.MapEvent.dispatch(MapEvent.java:266)
at com.tangosol.util.MapEvent.dispatch(MapEvent.java:226)
at com.tangosol.util.MapListenerSupport.fireEvent(MapListenerSupport.java:556)
at com.tangosol.coherence.component.util.SafeNamedCache.translateMapEvent(SafeNamedCache.CDB:7)
at com.tangosol.coherence.component.util.SafeNamedCache.entryInserted(SafeNamedCache.CDB:1)
at com.tangosol.util.MapEvent.dispatch(MapEvent.java:266)
at com.tangosol.coherence.component.util.CacheEvent.run(CacheEvent.CDB:18)
at com.tangosol.coherence.component.util.daemon.queueProcessor.Service$EventDispatcher.onNotify(Service.CDB:26)
at com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:42)
at java.lang.Thread.run(Thread.java:662)
>
x<Feb 3, 2012 6:27:35 AM GMT+00:00> <Error> <oracle.integration.platform.blocks.deploy.servlet> <SOA-21537> <Sending back error message: There was an error undeploying composite on ETH_SOA1: Cannot find revision in undeploy : Composite!1.0...>

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Error that I see in logs when I try undeployment via ANT Script:
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bash-3.00$ ant -f ant-sca-deploy.xml undeploy -DserverURL=http://x:8082 -DcompositeName=x -Drevision=1.0 -Duser=xxxxx -Dpartition=partition 
Buildfile: ant-sca-deploy.xml
[echo] oracle.home = /a/fmw/SOA/bin/..

undeploy:
[input] skipping input as property serverURL has already been set.
[input] skipping input as property compositeName has already been set.
[input] skipping input as property revision has already been set.
[undeployComposite] compositeDN =Composite!1.0
[undeployComposite] INFO: Creating HTTP connection to host:x, port:8082
[undeployComposite] Enter username and password for realm 'default' on host x:8082
[undeployComposite] Authentication Scheme: Basic
[undeployComposite] Username: xxxxxxx
[undeployComposite] Password:

[undeployComposite] INFO: Received HTTP response from the server, response code=500
[undeployComposite] ---->response code=500, error:There was an error undeploying composite on x_SOA1: Cannot find revision in undeploy : Composite!1.0..
[undeployComposite