Failed to deserialize/save system profile [java.lang.IllegalStateException] ?

2013-11-15 11:59:10 SEVERE [ReferenceObjectSerializer30] Expected reference object does not match by key id: serialized=Count xxx.internet.exceptions.XXXBaseException, expected=Count XXXXMException Suppressing this warning for another 60000 ms.
2013-11-15 11:59:10 SEVERE [ClientRequestListener] Failed to deserialize/save system profile: com.dynatrace.diagnostics.server.communication.ClientRequestListener a:357
java.lang.IllegalStateException: Expected reference object does not match by key id: serialized=Count xxx.internet.exceptions.XXXBaseException, expected=Count XXXXMException
    at com.dynatrace.diagnostics.core.serialization.abstracts.ReferenceObjectSerializer30.deserialize(SourceFile:57)
    at com.dynatrace.diagnostics.core.serialization.abstracts.ReferenceObjectSerializer30.deserialize(SourceFile:27)
    at com.dynatrace.diagnostics.core.serialization.abstracts.CommonCachedSerializers.resolveReferenceObjectStatically(SourceFile:2267)
    at com.dynatrace.diagnostics.core.serialization.serializer.AbstractMeasureReferenceSerializer30.deserialize(SourceFile:61)
    at com.dynatrace.diagnostics.core.serialization.serializer.AbstractMeasureReferenceSerializer30.deserialize(SourceFile:23)
    at com.dynatrace.diagnostics.core.serialization.abstracts.AbstractEmitterResolverCache.resolveCachedObject(SourceFile:286)
    at com.dynatrace.diagnostics.server.serialization.ClientServerCachedSerializers.resolveMeasureReference(SourceFile:2563)
    at com.dynatrace.diagnostics.server.serialization.serializer.ClientServerApplicationConfigSerializer30.deserializeMeasureSubscription(SourceFile:136)
    at com.dynatrace.diagnostics.server.serialization.serializer.ClientServerApplicationConfigSerializer30.deserializeMeasureSubscription(SourceFile:28)
    at com.dynatrace.diagnostics.core.serialization.serializer.AbstractCoreApplicationConfigSerializer30.deserialize(SourceFile:86)
    at com.dynatrace.diagnostics.server.serialization.serializer.ClientServerApplicationConfigSerializer30.deserialize(SourceFile:61)
    at com.dynatrace.diagnostics.server.serialization.serializer.ClientServerApplicationConfigSerializer35.deserialize(SourceFile:40)
    at com.dynatrace.diagnostics.server.serialization.serializer.ClientServerApplicationConfigSerializer35.deserialize(SourceFile:31)
    at com.dynatrace.diagnostics.server.serialization.ClientServerCachedSerializers.resolveApplicationConfig(SourceFile:2907)
    at com.dynatrace.diagnostics.server.protocol.ClientServerProtocol30.readSystemProfile(SourceFile:319)
    at com.dynatrace.diagnostics.server.protocol.ClientServerProtocol30.readSystemProfileRequest(SourceFile:331)
    at com.dynatrace.diagnostics.server.communication.ClientRequestListener.a(SourceFile:349)
    at com.dynatrace.diagnostics.server.communication.ClientRequestListener.handleCustomRequest(SourceFile:162)
    at com.dynatrace.diagnostics.communication.tcp.progress.LongTermRequestListener.handleRequestInternal(LongTermRequestListener.java:108)
    at com.dynatrace.diagnostics.communication.tcp.progress.LongTermRequestListener.notifyRequest(LongTermRequestListener.java:76)
    at com.dynatrace.diagnostics.communication.tcp.session.DefaultService.notifyRequest(DefaultService.java:98)
    at com.dynatrace.diagnostics.communication.tcp.session.DefaultSession.notifyRequest(DefaultSession.java:436)
    at com.dynatrace.diagnostics.communication.tcp.session.DefaultSessionManager.notifyRequest(DefaultSessionManager.java:797)
    at com.dynatrace.diagnostics.communication.tcp.connection.DefaultSocketListener.notifySocketActive(DefaultSocketListener.java:93)
    at com.dynatrace.diagnostics.communication.tcp.connection.DefaultSocketListener.notifySocketActive(DefaultSocketListener.java:27)
    at com.dynatrace.diagnostics.communication.tcp.socket.DefaultSocketHandlerRunnable.notifySocket(DefaultSocketHandlerRunnable.java:109)
    at com.dynatrace.diagnostics.communication.tcp.socket.DefaultSocketHandlerRunnable.handleRequest(DefaultSocketHandlerRunnable.java:95)
    at com.dynatrace.diagnostics.communication.tcp.socket.DefaultSocketHandlerRunnable.execute(DefaultSocketHandlerRunnable.java:55)
    at com.dynatrace.diagnostics.util.threads.StatusRunnable.run(StatusRunnable.java:46)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)

I am unable to save System Profile. DT 4.2. Ideas anyy one?

Thanks in advance.