https://bugs.winehq.org/show_bug.cgi?id=36873
--- Comment #6 from Tom Hobson tomhobsonleeds@gmail.com --- Hi Anastasius,
Unsure if this will aid you in getting the game running (but it should combat the error), but here is a patch that helped get M&B:II going: https://github.com/ValveSoftware/Proton/issues/3706#issuecomment-607021113
Cheers