DC-3 Nav radio problems

[TCA9083]

Fellas,

I want to fly the venerable DC-3 (default) and have some problems setting the Nav1 and Nav2 radio freqs. The hot spots are there, but nothing happens when I click them.

I have checked the "usual suspects" such as making sure the aircraft.cfg file has correct settings in the Audio section and also that the Avionics Master Switch is on, but no luck.

Anyone have any ideas?

Thanks,
Mike