Hi,

I'd installed and reinstaled BiaB+RB 2021 several times but still had this problem.

On the install, I don't get a new Realband shortcut for the 64-bit version and the old one remains for the 2020 32-bit version, though I didn't reealise that at first.

I've manually made a shortcut to RB2021/64 and it seems OK.

On the 32-bit version, though, whenever I started it and clicked on the style name box, I get a System Errors and RB locks up apparently indefinitely.

Error reported (why of why, in nearly 40 years of Windows can I _still_ not cut and paste text fromn an error dialog?):

"""
bbw2_32.exe - System Error

The code execution cannot proceed because Data/lib/libfastdsp.dll was not found. Reinstalling the program may fix this problem.
"""

Of course I was reinstalling the 64-bit version, so I guess it wouldn't fix anything.

Well, I'm on 64-bit, so I've removed the 32-bit shortcut and will just ignore that version.

Jazz relative beginner, starting at a much older age than was helpful.
Kawai MP6, Korg M50, Ui24R, Saffire Pro 40.
AVL:MXE Linux; Windows 11; Win8.1: Scarletts
BIAB2022 UltraPAK, Reaper, a bunch of stuff.