I've installed the universal controller 2.8 and tried to install the driver. Found both on the Presonus product page. I've tried to find the faderport.dll on my PC but it's nowhere to be found. So I can't force register it in the registry in order to get it in the Sonar Shared Surfaces folder. I don't have the original install disk to start from scratch.
I updated the firmware and rolled back the firmware, but, I don't think this is a firmware issue. It's a software issue and Windows 8 compatibility issue. I'm assuming.
Faderport Classic / Window 8.1 / Sonar Producer 8