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.(ThreadBaseSessionController.java:29)
at org.orm.PersistentManager.(PersistentManager.java:100)



Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.component.PojoComponentTuplizer]
at org.hibernate.tuple.component.ComponentTuplizerFactory.constructTuplizer(ComponentTuplizerFactory.java:101)
at org.hibernate.tuple.component.ComponentTuplizerFactory.constructDefaultTuplizer(ComponentTuplizerFactory.java:122)
at org.hibernate.tuple.component.ComponentEntityModeToTuplizerMapping.(ComponentEntityModeToTuplizerMapping.java:75)
at org.hibernate.tuple.component.ComponentMetamodel.(ComponentMetamodel.java:73)

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

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