I am reading the help screen for "Sending and receiving messages". Many of the "partner directories" do not exist.
I have the /outbox/ for each partner, but nothing else.
I don't have a dir for my local station, and therefore no inbox.
I don't have the sent or error directories, and I don't have any "_raw_incoming".
I have the (partnername)/outbox/(localstation) for each partner, but nothing else.
I don't know what happened. But after I went back to the original configuration the proper directories were all created. When I started re-entering my trading partners, the correct directories were still created.
So that takes care of this particular problem.