Bindery one is the first bindery context of the server. It usually indicates that the server has at least one bindery context set. If the server has multiple bindery contexts, it will search through all of them to find the user id requesting login. In this case the userid of the Remote Agent. Try using the full context of the userid. If this is not possible, set the bindery context needed so it is first.
I take it that the backups run fine. So the Agent is able to connect with the server and pull the files needed. You might be able to speed things up if you do not save the security settings on the file.