FL, if I load an FXB under Settings/Presets, nothing happens. It just doesn't load the bank. One plugin I can think of offhand that has this issue is OBXD. I have a 64 bit version of that now so It's not an issue ...
FL 64-bit?
Are not all native plugins 64-bit yet? Which ones aren't?
I'm making the step to 64-bit, but sadly a lot of plugins I have are still not 64-bit (Variety of Sound for instance ...