Good day Andrew,
Seems you and I have encountered the exact same problem as you have described in your ticket. about the Studio 192 interface to Presonus.
I have been in touch several times with the leading techy at Presonus (Butch).
Sent me a list of things to change on my computer,,did them all to the best of my ability,so either
I missed something or something is wrong here.
L message in the Led in front of screen on unit.
Worked great until i downloaded the latest drivers, then nothing at all.
Hoping you might have found a solution by name and if you did, can u please e-mail at
email@example.com. Hoping to hear from you soon.