I'm trying to use a style with a MIDI drum part at the beginning and
end of a tune, with a realdrums style in the middle, but I'm getting
access violation messages, and the song ignores the MIDI-based style.
I've tried using multi-style within a song and also just switching
to another style at a specific bar, but always get the same result.

Am I trying to do something that BiaB is not able to accommodate?

Thanks, -Nate