Okay I have got Gizmo to connect by generating another access key (not sure why the first one didn't work). But I can only play to the tablet. The What do you want to do? prompt should be a list of zones to play to, but they are not appearing when connected to MC20. I had this setup and working in MC19, but MC20 will not list the local zones. I want to able to use Gizmo to control MC20 as a remote for audio without using a screen.
I have previously backed up the library from MC19 and imported in MC20. MC19 has been uninstalled from this PC.