I have the same set up except a DM4800. My remote layer seems to work perfectly with the latest version of Logic. All I did was plug the USB of the DM to the Mac Mini. I don't recall trying to install any drivers. I just went into Logic and set up the DM as a control surface. It literally took 2 minutes. You should be able to find the control surface setup info else where in this forum.
Yeah i set the controller in Mc logic mode. Plug in the usb and in logic add mckie control set midi in out. Its.works thankss