Can't use hibernate second level cache in 1.4.4

Referencing #952 I've tried to get this working in 1.4.4 but am getting errors. If I add this to my application.conf

hibernate.cache.use_second_level_cache=true
hibernate.cache.use_query_cache=true
hibernate.cache.region.factory_class=net.sf.ehcache.hibernate.EhCacheRegionFactory

I get the following error:

Oops: PersistenceException
Unexpected error : Unexpected Error, caused by exception PersistenceException: Unable to build EntityManagerFactory

play.exceptions.UnexpectedException: Unexpected Error
	at play.Play.start(Play.java:571)
	at play.Play.detectChanges(Play.java:659)
	at play.Invoker$Invocation.init(Invoker.java:209)
	at Invocation.HTTP Request(Play!)
Caused by: javax.persistence.PersistenceException: Unable to build EntityManagerFactory
	at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:925)
	at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:900)
	at play.db.jpa.JPAPlugin.onApplicationStart(JPAPlugin.java:198)
	at play.plugins.PluginCollection.onApplicationStart(PluginCollection.java:616)
	at play.Play.start(Play.java:541)
	... 3 more
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.spi.CacheImplementor]
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:211)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:175)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:156)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:267)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1799)
	at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:96)
	at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:918)
	... 7 more
Caused by: org.hibernate.cache.CacheException: net.sf.ehcache.CacheException: Another unnamed CacheManager already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following:
1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary
2. Shutdown the earlier cacheManager before creating new one with same name.
The source of the existing CacheManager is: DefaultConfigurationSource [ ehcache.xml or ehcache-failsafe.xml ]
	at org.hibernate.cache.ehcache.EhCacheRegionFactory.start(EhCacheRegionFactory.java:110)
	at org.hibernate.internal.CacheImpl.<init>(CacheImpl.java:70)
	at org.hibernate.engine.spi.CacheInitiator.initiateService(CacheInitiator.java:40)
	at org.hibernate.engine.spi.CacheInitiator.initiateService(CacheInitiator.java:35)
	at org.hibernate.service.internal.SessionFactoryServiceRegistryImpl.initiateService(SessionFactoryServiceRegistryImpl.java:91)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:201)
	... 13 more
Caused by: net.sf.ehcache.CacheException: Another unnamed CacheManager already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following:
1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary
2. Shutdown the earlier cacheManager before creating new one with same name.
The source of the existing CacheManager is: DefaultConfigurationSource [ ehcache.xml or ehcache-failsafe.xml ]
	at net.sf.ehcache.CacheManager.assertNoCacheManagerExistsWithSameName(CacheManager.java:529)
	at net.sf.ehcache.CacheManager.init(CacheManager.java:374)
	at net.sf.ehcache.CacheManager.<init>(CacheManager.java:259)
	at org.hibernate.cache.ehcache.EhCacheRegionFactory.start(EhCacheRegionFactory.java:83)
	... 18 more

I noticed that the package name for EhCacheRegionFactory in the newly included jar was org.hibernate.cache.ehcache.EhCacheRegionFactory but setting that in the application.conf also errors. Is anyone else able to get this working?

Start with the cache settings in application.conf and the JPA startup path in play.db.jpa.JPAPlugin, then compare the configured EhCacheRegionFactory package with the stack trace. Reproduce the EntityManagerFactory failure and confirm a working second-level-cache configuration without the duplicate unnamed CacheManager error.