Yeah, I tried that already. Uninstalled everything and reinstalled. I have a custom config so I can use EQ APO (along with Peace EQ for 32 band per channel room EQ) and DD+, but I tried just DD+ and it's still blank but as mentioned Dolby Digital still works fine. I only have Dolby DS1 checked.Try Redoing The Entire Thing Maybe That Will Work? And Did This Work Before? And Also What Did U Select?
Have been using this setup for over a year and only recently did that tab go blank, maybe a Windows update broke old Dolby features?