I've been running the DM4800 with Digital Performer for years without a problem. I'm now doing a couple of projects in Logic Pro X... the latest version and am having intermittent problems connecting with the DM. Sometimes it works fine and then it will lose connection and the channels won't be available even though the DM shows up and is selected in Audio Preferences. Is there a way to make it reconnect? Quitting and restarting Logic doesn't fix it, but a reboot of the Mac sometimes does. Any help is greatly appreciated.