This might be a long shot, but try this:

1: Open the BiaB song in Real Band

2: Save the song (still as a BiaB song) with a different name.

3: Then open the newly saved song in BiaB and try the export to Wav again.


BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.