Hello list, I am trying to unregister a custom node type "myapp:User" by executing: QName quName = new QName("myapp", "User"); NodeTypeManagerImpl ntMgr = (NodeTypeManagerImpl) session.getWorkspace ().getNodeTypeManager(); NodeTypeRegistry ntreg = ntMgr.getNodeTypeRegistry(); ntreg.unregisterNodeType(quName); As a result when executing the code, I get reported "javax.jcr.RepositoryException: not yet implemented" Am I doing something incorrectly? If not, is there a work around ? Thanks a lot, Dirk V. Schesmer Stuttgart/Germany