That is what I was getting at. It’s not that BiaB and reaper are using the same settings. It is that the sound blaster card is running at 48,000 sample rate, and if reaper and BiaB are not the same there may be a conflict. I also expect that the age of the driver as Dan said May be a problem.

I’m not 100% sure but the plugin looks back at the BiaB folder which may take into consideration the BiaB settings.

As pipeline mentioned the folder may be named improperly.

All of this is important. If you want it to work properly then you need to make sure everything is right.

HP Win 11 12 gig ram, Mac mini with 16 gig of ram, BiaB 2025, Realband, Reaper 7, Harrison Mixbus 9 32c , Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app.