What a great start to the New Year for you !

All I can suggest is you uninstall the Receiver software, and reboot.

Then make sure theh HPNA adapter looks like its working, and reinstall the Receiver software. Follow that with another reboot.

Looks like you have already worked out that the Receiver software acts as a DHCP server, and then supplies music over the adapter that you choose.

If you have bridged your adapters and are running DHCP server on the Ethernet adapter that you probably DONT need the Receiver software to do DHCP server.

Any chance you could test this just using Ethernet ?