The Windows plugin can only has to run on the same computer where the main Band-in-a-Box program resides. That's because the plugin silently runs the main Band-in-a-Box program as a silent, background task.

My guess is the Mac plugin also requires the main Band-in-a-Box program.
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Jim Fogle - 2022 BiaB (906) RB (Build 1) Ultra+ PAK
Cakewalk - Zoom MRS-8 recorder
Desktop: i7 Win 10 build 2004, 12GB ram 256GB SSD, 4 TB HDD
Laptop: i3 64bit Win 10 build 21H1, 8GB ram 500GB HDD
Music at: http://fogle622.wix.com/fogle622-audio-home