I am having an issue persisting data into my cache. The cache is being used for persisting data received off a queue. However, I consistently get a ClassCastException when calling PojoCache.attach():

2009-04-15 16:48:25,245 DEBUG [org.jboss.cache.pojo.interceptors.PojoTxSynchronizationHandler] Running Pojo rollback phase
2009-04-15 16:48:25,245 DEBUG [org.jboss.cache.pojo.interceptors.PojoTxSynchronizationHandler] Finished rollback phase
2009-04-15 16:48:25,245 ERROR [net.isobar.bss.google.sync.performance.PerformanceReportListener] Error processing message
org.jboss.cache.pojo.PojoCacheException: attach failed /PerformanceReportListener/1_2009-04-12_2009-04-14/0
 at org.jboss.cache.pojo.impl.PojoCacheImpl.attach(PojoCacheImpl.java:111)
 at org.jboss.cache.pojo.impl.PojoCacheImpl.attach(PojoCacheImpl.java:93)
 at net.isobar.bss.jbpm.messaging.BatchedProcessMessageListener.addMessage(BatchedProcessMessageListener.java:230)
 at net.isobar.bss.google.sync.performance.PerformanceReportListener.addMessage(PerformanceReportListener.java:102)
 at net.isobar.bss.google.sync.performance.PerformanceReportListener.addMessage(PerformanceReportListener.java:39)
 at net.isobar.bss.jbpm.messaging.BatchedProcessMessageListener.onMessage(BatchedProcessMessageListener.java:93)
 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.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
 at org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
 at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
 at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
 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.jboss.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterceptor.java:72)
 at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_10331154.invoke(InvocationContextInterceptor_z_fillMethod_10331154.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.java:88)
 at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_10331154.invoke(InvocationContextInterceptor_z_setup_10331154.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:56)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.StatelessBMTInterceptor.handleInvocation(StatelessBMTInterceptor.java:106)
 at org.jboss.ejb3.tx.BMTInterceptor.invoke(BMTInterceptor.java:55)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:68)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:80)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.mdb.MessagingContainer.localInvoke(MessagingContainer.java:262)
 at org.jboss.ejb3.mdb.inflow.MessageInflowLocalProxy.delivery(MessageInflowLocalProxy.java:270)
 at org.jboss.ejb3.mdb.inflow.MessageInflowLocalProxy.invoke(MessageInflowLocalProxy.java:140)
 at $Proxy237.onMessage(Unknown Source)
 at org.jboss.resource.adapter.jms.inflow.JmsServerSession.onMessage(JmsServerSession.java:178)
 at org.jboss.jms.client.container.ClientConsumer.callOnMessageStatic(ClientConsumer.java:160)
 at org.jboss.jms.client.container.SessionAspect.handleRun(SessionAspect.java:831)
 at org.jboss.aop.advice.org.jboss.jms.client.container.SessionAspect_z_handleRun_10331154.invoke(SessionAspect_z_handleRun_10331154.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.jms.client.container.ClosedInterceptor.invoke(ClosedInterceptor.java:170)
 at org.jboss.aop.advice.PerInstanceInterceptor.invoke(PerInstanceInterceptor.java:86)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.jms.client.delegate.ClientSessionDelegate.run(ClientSessionDelegate.java)
 at org.jboss.jms.client.JBossSession.run(JBossSession.java:199)
 at org.jboss.resource.adapter.jms.inflow.JmsServerSession.run(JmsServerSession.java:234)
 at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:213)
 at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:260)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
 at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException: org.jboss.cache.UnversionedNode cannot be cast to org.jboss.cache.mvcc.NodeReference
 at org.jboss.cache.mvcc.ReadCommittedNode.markForUpdate(ReadCommittedNode.java:121)
 at org.jboss.cache.mvcc.MVCCNodeHelper.wrapNodeForWriting(MVCCNodeHelper.java:193)
 at org.jboss.cache.interceptors.MVCCLockingInterceptor.handlePutKeyValueCommand(MVCCLockingInterceptor.java:101)
 at org.jboss.cache.interceptors.base.PrePostProcessingCommandInterceptor.visitPutKeyValueCommand(PrePostProcessingCommandInterceptor.java:88)
 at org.jboss.cache.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:100)
 at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
 at org.jboss.cache.interceptors.CacheLoaderInterceptor.visitPutKeyValueCommand(CacheLoaderInterceptor.java:137)
 at org.jboss.cache.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:100)
 at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
 at org.jboss.cache.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:131)
 at org.jboss.cache.commands.AbstractVisitor.visitPutKeyValueCommand(AbstractVisitor.java:65)
 at org.jboss.cache.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:100)
 at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
 at org.jboss.cache.interceptors.TxInterceptor.attachGtxAndPassUpChain(TxInterceptor.java:261)
 at org.jboss.cache.interceptors.TxInterceptor.handleDefault(TxInterceptor.java:250)
 at org.jboss.cache.commands.AbstractVisitor.visitPutKeyValueCommand(AbstractVisitor.java:65)
 at org.jboss.cache.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:100)
 at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
 at org.jboss.cache.interceptors.CacheMgmtInterceptor.visitPutKeyValueCommand(CacheMgmtInterceptor.java:108)
 at org.jboss.cache.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:100)
 at org.jboss.cache.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:116)
 at org.jboss.cache.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:178)
 at org.jboss.cache.interceptors.InvocationContextInterceptor.visitPutKeyValueCommand(InvocationContextInterceptor.java:82)
 at org.jboss.cache.commands.write.PutKeyValueCommand.acceptVisitor(PutKeyValueCommand.java:100)
 at org.jboss.cache.interceptors.InterceptorChain.invoke(InterceptorChain.java:287)
 at org.jboss.cache.invocation.CacheInvocationDelegate.put(CacheInvocationDelegate.java:473)
 at org.jboss.cache.pojo.impl.InternalHelper.lockPojo(InternalHelper.java:342)
 at org.jboss.cache.pojo.impl.PojoCacheDelegate.putObject(PojoCacheDelegate.java:101)
 at org.jboss.cache.pojo.impl.PojoCacheImpl.attach(PojoCacheImpl.java:102)
 ... 67 more

My cache is running in local mode, and the issue seems to only clear up when I drop and re-create the tables in the database. My cache config is below:

<?xml version="1.0" encoding="UTF-8"?>
<jbosscache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:jboss:jbosscache-core:config:3.0">
 <transaction
 syncRollbackPhase="true"
 syncCommitPhase="true"
 transactionManagerLookupClass="org.jboss.cache.transaction.GenericTransactionManagerLookup"
 />
 <locking
 isolationLevel="READ_COMMITTED"
 lockParentForChildInsertRemove="true"
 lockAcquisitionTimeout="20000"
 nodeLockingScheme="mvcc"
 writeSkewCheck="false"
 concurrencyLevel="500"
 />
 <loaders passivation="false" shared="false">
 <loader
 class="org.jboss.cache.loader.JDBCCacheLoader"
 async="true"
 fetchPersistentState="false"
 ignoreModifications="false"
 purgeOnStartup="false"
 >
 <properties>
 cache.jdbc.datasource=java:/DefaultDS
 cache.jdbc.table.create=true
 cache.jdbc.table.name=MESSAGE_BATCHING_${jboss.bind.address}
 cache.jdbc.table.primarykey=pkJbossCache
 cache.jdbc.fqn.column=fqn
 cache.jdbc.fqn.type=VARCHAR(4000)
 cache.jdbc.node.column=node
 cache.jdbc.node.type=VARBINARY(8000)
 cache.jdbc.parent.column=parent
 </properties>
 </loader>
 </loaders>
</jbosscache>

I've been trying to solve this for a few days, but can't find anything on this error. Any help would be very much appreciated.