I've been a GarageBand user for over a decade so I decided to downloaded Logic Pro which is basically a more advanced version of GarageBand.

Doing so should solve the problem of the plugin not working within GarageBand. There's something about GarageBand 10.4.5 that according to PG music that has issues loading the B-I-A-B DAW plugin.

Anyway, now onward and upward with my new Logic Pro! Can't wait to start using the plugin with it! : )