Thanks for the suggestion, Noel. No joy running as administrator, initially, but then I opened a different song file, and that one is allowing to select Hi-Q instruments (though there's no Vibes/Vibraphone patch that this song was originally using). I'm thinking the other project might not allow selecting Hi-Q instrument because it's assigned to use a VSTi. I'm rusty using BiaB so will have to poke around when I have more time.

But I still need to find away to get rid of the warning in Cakewalk by Bandlab. I won't need to use those instruments, but having to close the pop-up every time I open the synth UI is a nuisance.