Hibernate version: 3.1.2

Debug level Hibernate log excerpt:

This Exception report looks like its Hibernates fault, being deep inside Hibernate and trying to call a method that doesn't exist. This application has been working with Hibernate 3.0.5.

java.lang.NoSuchMethodError: com.foobar.data.MyProvider.getHibernateLazyInitializer()Lorg/hibernate/proxy/LazyInitializer;
at com.foobar.data.MyProvider$$EnhancerByCGLIB$$836c1a02.getHibernateLazyInitializer(<generated>)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:274)
at org.hibernate.type.EntityType.resolve(EntityType.java:303)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:113)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1785)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:93)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:81)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:2730)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:365)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:346)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:123)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:177)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:891)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:828)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:821)
at com.foobar.tasklets.Sr.ProcessThread.doMySRGeneric(ProcessThread.java:256)
at com.foobar.tasklets.Sr.ProcessThread.doSrOne(ProcessThread.java:233)
at com.foobar.tasklets.Sr.ProcessThread.doProcessGeneric(ProcessThread.java:430)
at com.foobar.tasklets.Sr.ProcessThread.doFindNewSweepEnd(ProcessThread.java:498)
at com.foobar.tasklets.Sr.ProcessThread.startTask(ProcessThread.java:101)
at net.netbauds.tasklets.ControlableThread.run(ControlableThread.java:99)
at java.lang.Thread.run(Thread.java:595)

Thanks for the pointer, I've added my scenario to the bug report.