[Rey_a]

Thanks for that information.

I had a look at the Roland manual, and it seems the device has a switch allowing it to be used in compliant or non compliant mode ....

So I changed the switch to compliant mode.

And now BOTH USB midi devices are recognised by the superpowered MIDI ...., but now MSP hangs.

Strangely I got it to work just once. But never again after that.
Since that first working time, MSPro allways hangs after the detection message for both midi devices has appeared.
I allways need to force the tablet off by long pressing the power switch to get out of the hang .....
Rebooted tablet several times, but still MSP allways hangs after the detection.

So now I am back to standard MIDI and that still works ok (even with the Roland now in compliant mode)

Thanks

Rudy