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


I think my wife has started to show the first signs of dementia.
She said she can't remember what she ever saw in me!

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