Um. Why do you have a Boolean value for a property of type String, anyway?? Caused by: java.lang.ClassCastException: java.lang.Boolean | at org.hibernate.type.StringType.toString(StringType.java:44) | at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:87) | at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:60) | at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:19 | 10) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3982724#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...