No sound output from U-Mix Control Pro

I have a U-Mix Control Pro and the latest version of Cross 3.3.11, running on Windows 10. I have been unable to get any sound from the U-Mix line out or headphone jack.
The routing is set to Dual Stereo but I have also tried all the other options.
I have installed the latest Asio4all driver and in the Asio control panel the U-Mix and its inputs and outputs are lit blue
I have tried both 32 bit and 64 bit versions of Cross.
I have tried two different PC's running Windows 10.
I have tried disabling exclusive mode in sound option in control panel.
I can only get sound if I set output to the PC internal sound card (Realtek HD).
The DJ controller functions work perfectly.
The last time I used the U-Mix was about 12 months ago running Windows 7, it was always finnicky requiring to be switched off and on after windows booted but always worked.
Hope someone can help me!
Screenshot of my setup:
The routing is set to Dual Stereo but I have also tried all the other options.
I have installed the latest Asio4all driver and in the Asio control panel the U-Mix and its inputs and outputs are lit blue
I have tried both 32 bit and 64 bit versions of Cross.
I have tried two different PC's running Windows 10.
I have tried disabling exclusive mode in sound option in control panel.
I can only get sound if I set output to the PC internal sound card (Realtek HD).
The DJ controller functions work perfectly.
The last time I used the U-Mix was about 12 months ago running Windows 7, it was always finnicky requiring to be switched off and on after windows booted but always worked.
Hope someone can help me!
Screenshot of my setup: