hi, I think there's a typo in the ReadOnlyNodeTypeManager on line 313: I think it should check if 'type' exists, not 'types'.
best, alex [0] http://svn.apache.org/viewvc/jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/nodetype/ReadOnlyNodeTypeManager.java?view=markup#l312
