Hey guys, here's a guess. Can you remove "<feature version="2.1.0">jpa</feature>" from your dependencies feature, then re-test? In Karaf 3.0.4, the "jpa" system bundle uses Hibernate ORM 4.2.x (incorrectly, I might add – long story). You're likely introducing conflicts. Instead, allow the hibernate-envers feature we provide to pull in the necessary dependency bundles, including hibernate-jpa-api, hibernate-core, and hibernate-entitymanager.