Fail to create detabase, ORM

Hi, I have a problem is that when I run the java class has been generated for database creation “ORM” appear the following errors in ecllipse with VP-UML:

org.orm.PersistentException: Failed to create ThreadBaseSessionController
at org.orm.util.ThreadBaseSessionController.(
at org.orm.PersistentManager.(

Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.component.PojoComponentTuplizer]
at org.hibernate.tuple.component.ComponentTuplizerFactory.constructTuplizer(
at org.hibernate.tuple.component.ComponentTuplizerFactory.constructDefaultTuplizer(
at org.hibernate.tuple.component.ComponentEntityModeToTuplizerMapping.(
at org.hibernate.tuple.component.ComponentMetamodel.(

Does anyone could tell me how to solve the problem? I hope your help

Excuse me for my english, but I’m Spanish. Thanks.