I am getting versioning exception while using jboss cache. Please help me in solving this.

2007-07-20 04:57:40,200 ERROR [org.jboss.cache.transaction.DummyTransaction] beforeCompletion() failed for tx=org.jboss.cache.transaction.DummyTransaction@263887, handlers=[TxInterceptor.LocalSynchronizationHandler(gtx=GlobalTransaction:<null>:17881, tx=org.jboss.cache.transaction.DummyTransaction@263887)]
java.lang.RuntimeException:
 at org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(TxInterceptor.java:1091)
 at org.jboss.cache.interceptors.OrderedSynchronizationHandler.beforeCompletion(OrderedSynchronizationHandler.java:75)
 at org.jboss.cache.transaction.DummyTransaction.notifyBeforeCompletion(DummyTransaction.java:247)
 at org.jboss.cache.transaction.DummyTransaction.commit(DummyTransaction.java:54)
 at org.jboss.cache.transaction.DummyBaseTransactionManager.commit(DummyBaseTransactionManager.java:61)
 at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod(TxInterceptor.java:349)
 at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java:156)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke(CacheMgmtInterceptor.java:157)
 at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:5520)
 at org.jboss.cache.TreeCache.put(TreeCache.java:3678)
 at com.tg.cache.manager.FareCacheProviderImpl.addToCache(FareCacheProviderImpl.java:104)
 at com.tg.ws.abacus.AbacusFareService.putResponseInCache(AbacusFareService.java:615)
 at com.tg.ws.abacus.AbacusFareService_1_5.getFaresFromCacheOrWSForRequest(AbacusFareService_1_5.java:187)
 at com.tg.ws.abacus.FarePoolHandler.execute(FarePoolHandler.java:29)
 at com.tg.ws.abacus.FarePoolHandler.execute(FarePoolHandler.java:15)
 at com.tg.parallel.concurrent.JavaConcurrentPoolExecutor$CallableAdapter.call(JavaConcurrentPoolExecutor.java:93)
 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$Worker.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
Caused by: org.jboss.cache.CacheException: DataNode [/fare/BOM/CCU/8/5/07 12:00 AM] version Ver=2 is newer than workspace node Ver=1
 at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.simpleValidate(OptimisticValidatorInterceptor.java:127)
 at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.validateNodes(OptimisticValidatorInterceptor.java:101)
 at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.invoke(OptimisticValidatorInterceptor.java:66)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.OptimisticLockingInterceptor.invoke(OptimisticLockingInterceptor.java:95)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.CacheStoreInterceptor.invoke(CacheStoreInterceptor.java:135)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.CacheLoaderInterceptor.invoke(CacheLoaderInterceptor.java:197)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.TxInterceptor.runPreparePhase(TxInterceptor.java:804)
 at org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(TxInterceptor.java:1069)
 ... 21 more
2007-07-20 04:57:40,259 ERROR [org.jboss.cache.transaction.DummyTransaction] beforeCompletion() failed for tx=org.jboss.cache.transaction.DummyTransaction@15a27c3, handlers=[TxInterceptor.LocalSynchronizationHandler(gtx=GlobalTransaction:<null>:17883, tx=org.jboss.cache.transaction.DummyTransaction@15a27c3)]
java.lang.RuntimeException:
 at org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(TxInterceptor.java:1091)
 at org.jboss.cache.interceptors.OrderedSynchronizationHandler.beforeCompletion(OrderedSynchronizationHandler.java:75)
 at org.jboss.cache.transaction.DummyTransaction.notifyBeforeCompletion(DummyTransaction.java:247)
 at org.jboss.cache.transaction.DummyTransaction.commit(DummyTransaction.java:54)
 at org.jboss.cache.transaction.DummyBaseTransactionManager.commit(DummyBaseTransactionManager.java:61)
 at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod(TxInterceptor.java:349)
 at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java:156)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke(CacheMgmtInterceptor.java:157)
 at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:5520)
 at org.jboss.cache.TreeCache.put(TreeCache.java:3678)
 at com.tg.cache.manager.FareCacheProviderImpl.addToCache(FareCacheProviderImpl.java:104)
 at com.tg.ws.abacus.AbacusFareService.putResponseInCache(AbacusFareService.java:615)
 at com.tg.ws.abacus.AbacusFareService_1_5.getFaresFromCacheOrWSForRequest(AbacusFareService_1_5.java:188)
 at com.tg.ws.abacus.FarePoolHandler.execute(FarePoolHandler.java:29)
 at com.tg.ws.abacus.FarePoolHandler.execute(FarePoolHandler.java:15)
 at com.tg.parallel.concurrent.JavaConcurrentPoolExecutor$CallableAdapter.call(JavaConcurrentPoolExecutor.java:93)
 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$Worker.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
Caused by: org.jboss.cache.CacheException: DataNode [/fare/BOM/CCU/8/5/07 12:00 AM] version Ver=3 is newer than workspace node Ver=2
 at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.simpleValidate(OptimisticValidatorInterceptor.java:127)
 at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.validateNodes(OptimisticValidatorInterceptor.java:101)
 at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.invoke(OptimisticValidatorInterceptor.java:66)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.OptimisticLockingInterceptor.invoke(OptimisticLockingInterceptor.java:95)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.CacheStoreInterceptor.invoke(CacheStoreInterceptor.java:135)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.CacheLoaderInterceptor.invoke(CacheLoaderInterceptor.java:197)
 at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
 at org.jboss.cache.interceptors.TxInterceptor.runPreparePhase(TxInterceptor.java:804)
 at org.jboss.cache.interceptors.TxInterceptor$LocalSynchronizationHandler.beforeCompletion(TxInterceptor.java:1069)
 ... 21 more