JPA + Firebird Eclipse

Estou tentando conectar no firebird atraves do jpa no eclipse mas o seguinte erro abaixo

Exception in thread “main” java.lang.NullPointerException

at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:169)

at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2833)

at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2829)

at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1840)

at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:902)

at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:57)

at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48)

at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:32)