You sound like you know what you’re doing. Is this message new since updating to build 734? If so, confirm the diagnosis by downloading an earlier build and installing that.

More basically, if the error is not new, did you upgrade from an earlier version of BIAB, particularly 2017 or earlier? There is a Cleanup utility that moves files to the newer folder scheme introduced in (I think) 2018. It does no harm to run that again.

Other that those, I recommend you consult PG Music Support for this very specific error.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.