SOLVED! s/pdif -> interface headphone out dies

Anyone experienced the same as me? When using s/pdif connection my headphone out from my interface don’t work.

Any solutions?

From audio interface. I hear everything through the speakers like normal, but headphone out dies.

Focusrite Saffire 14 Pro. Old school FireWire audio interface.

Cool. I will look at it tomorrow. Thanx

EDIT: Fixed it. It was the software.