Hallo Mike,
Thanks for getting back to me.

The MIDI/Audio driver setup is showing my 1o2 Express as both MIDI input and output drivers; Synthesiser/soundcard is showing Yamaha PSR-500; VSTi/DXi synth is unchecked and MIDI thru is greyed out.

Being completely ignorant of the system at this point, could you please explain what a MIDI patch is? Sorry to be a nuisance!

Regards,
David