java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at net.sf.hibernate.collection.CollectionPersister.(CollectionPersister.java:191)
at net.sf.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:216)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:627)
at com.loren.Report.startHibernate(Report.java:44)
at com.loren.Report.main(Report.java:88)

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