Is there any chance that you have an audio file (.mps, .wav etc ) by the same file name in the same folder as the BIAB song file (.sgu, .mgu)?

If so, rename the audio file start the program again and see if the issue remains.


BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones