Using FileSystemSource, problem setting invalid property names: [jcr:createdBy] during session.save() when creating JCR nt:file or nt:folder nodes

Using FileSystemSource and same configuration as in UFOs example, after creating new Node of types nt:file or nt:folder , session.save() will raise the below exception:

org.modeshape.graph.connector.RepositorySourceException: Attempt to set or update invalid property names: [jcr:createdBy]