Hi, I develop a web app which has it model classes in a separate jar that also contains the hbm.xml files for mapping the entities. The entities are accessed through standard JPA EntityManager. There are both query and home components declared in components.xml: <framework:entity-query name="subsystemList" ejbql="select s from CaasSubsystem s" max-results="1000" /> <framework:entity-home name="subsystemHome" entity-class="com.comptel.cs.caas.pojo.CaasSubsystem" /> Everything goes fine until I delete an entity with the home component. Then Seam.getEntityClass gets invoked and returns null, which in turn causes the following: Caused by: java.lang.IllegalArgumentException: Not an entity class: com.comptel.cs.caas.pojo.CaasSubsystem at org.jboss.seam.Entity.forClass(Entity.java:208) at org.jboss.seam.persistence.PersistenceProvider.getName(PersistenceProvider.java:75) at org.jboss.seam.persistence.HibernatePersistenceProvider.getName(HibernatePersistenceProvider.java:246) at org.jboss.seam.framework.EntityHome.getEntityName(EntityHome.java:123) at org.jboss.seam.framework.Home.getSimpleEntityName(Home.java:255) at org.jboss.seam.framework.Home.raiseAfterTransactionSuccessEvent(Home.java:250) at org.jboss.seam.framework.EntityHome.remove(EntityHome.java:64) This is because the Seam.getEntityClass checks for @javax.persisence.Entity annotation or ejb3 xml mapping, but it does not take into account that entities can mapped by hbm.xml files too. I tried using hibernate-entity-home and hibernate-entity-query components , but it did not help, but the exception occurred more often, not only after invoking remove on the entity home component. Annotating my classes with @Entity (which are mapped in *.hbm.xml!) helped, but it not a correct solution, because there might be some cases when the classes in the model package cannot be changed. Has anyone any idea how to work this around? Thanks, Daniel View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4101772#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...