Have tried everything suggested in the various threads, have rebooted with cable in/out, before/after starting editor, new batteries, stood on head while whistling dixie, tried using wifes PC
Using PC using XP, latest Editor software - it worked on a previous MX-900, but not working with new one I just got (& the other is at my other house so I cannpt try it)

Some suggest disabling Bluetooth - my Control Panel shows no Bluetooth to disable - Help??

Some suggest manually installing the USB driver - which one, there are like 10 of them in the URC directory?

This is really driving me batty - does anyone have any other suggestions?