I have the old software but it doesn't do anything with the bass either. The USB to Variax dongle lights up green to USB and green to the JTV, but flashes red with the bass plugged in. Bass has power. It is the Line 6 Monkey software that allows me to update firmware, and works on the JTV but not the Bass. Does the old software only work with the old variax to USB adapter? Monkey shows my adapter to look like the old stop sign looking setup anyway, so I assumed it worked identical to the old one but I am at a total loss.