I believe Russ has very kindly cracked it for me. The MD600 core is running Sooloos version 2.394 which pre-dates TouchPC. Now just have to see if I can get through to M to force a software update as it doesn't want to update itself.

Will update when I am up and running smile

Main: MS600, G61R, DSP3100Vx3, DSP33x2, SW1600, Samsung 65JS9500 TV, Sony X800, Wireworld Star*light video cabling, Isotek Vision, Isotek Elite/Prem mains cabling.
Office: Roon ROCK on NUC7i5, Allo USBridge + iFi PSU, Prime Amp/PSU, Fostex TH900.
On the Go: Surface Pro, Explorer2, Sennheiser Momentum M2
Smyth Realiser2 on pre-order :-)