1. Run the install package as an Administrator.

If that does not work, see if you can rename the old DLL to something other then what it is now and try reinstalling as an Administrator.

I just did the the upgrade and it works just fine here. Before I did it, I checked the properties of both the 32bit and thee 64bit DLL's and then rechecked the properties of both DLL's after the upgrade and the versions did change on my end.

Also since you said you also have a copy of the 64bit DLL in your BB\Data\libx64 directory, I would rename that one to something else for now and then copy the updated SynthFont64.dll from C:\Program Files\VST directory to your BB\Data\libx64 directory. That way you have both of them the same version.

On your properties-details for the file, the updated version should show file version 3.2.0.1

That is what I have on my end.

BIAB2025
Windows 10 Pro
WA6NCB
Crappy Laptop