Unmarshall problem in compatibility mode

04:48:28,445 ERROR [org.infinispan.interceptors.InvocationContextInterceptor] (remote-thread-0) ISPN000136: Execution error: java.io.IOException: Unsupported protocol version 9
	at org.jboss.marshalling.river.RiverUnmarshaller.start(RiverUnmarshaller.java:1243)
	at org.infinispan.commons.marshall.jboss.AbstractJBossMarshaller.startObjectInput(AbstractJBossMarshaller.java:138) [infinispan-commons-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.commons.marshall.jboss.AbstractJBossMarshaller.objectFromByteBuffer(AbstractJBossMarshaller.java:119) [infinispan-commons-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.commons.marshall.AbstractMarshaller.objectFromByteBuffer(AbstractMarshaller.java:83) [infinispan-commons-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.server.hotrod.HotRodTypeConverter.unmarshall(HotRodTypeConverter.scala:36) [infinispan-server-hotrod-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.server.hotrod.HotRodTypeConverter.boxValue(HotRodTypeConverter.scala:22) [infinispan-server-hotrod-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.interceptors.compat.TypeConverterInterceptor.visitPutKeyValueCommand(TypeConverterInterceptor.java:72) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:62) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:98) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:106) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:70) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.commands.AbstractVisitor.visitPutKeyValueCommand(AbstractVisitor.java:32) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:62) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:321) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.commands.remote.BaseRpcInvokingCommand.processVisitableCommand(BaseRpcInvokingCommand.java:39) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.commands.remote.SingleRpcCommand.perform(SingleRpcCommand.java:48) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.remoting.InboundInvocationHandlerImpl.handleInternal(InboundInvocationHandlerImpl.java:97) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.remoting.InboundInvocationHandlerImpl.access$000(InboundInvocationHandlerImpl.java:46) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at org.infinispan.remoting.InboundInvocationHandlerImpl$2.run(InboundInvocationHandlerImpl.java:169) [infinispan-core-6.0.0.Alpha2-redhat-1.jar:6.0.0.Alpha2-redhat-1]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25]
	at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]