It works OK here, I can load any VST3i.
Have you re-scanned them?
Have you tried the options/return to factory settings/most? That usually works for BiaB problems.

Also you may get more responses in the Band in a Box for windows forum:

https://www.pgmusic.com/forums/ubbthreads.php?ubb=postlist&Board=1&page=1


My momma didn't raise a fool. And if she did it, was one of my brothers.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware