When I started BIAB, I was prompted to run an update. I ran it, but now when I rebuild the songlist, I get this: "E:\bb\Songs\ has no Band-in-a-Box songs (SGU,MGU etc.). List will be empty"

What to do?
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Band-In-A-Box for Windows
Version 2019 (644)
64 bit application
RealBand 2019 (5)
Windows 10 Pro
Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
16.0 GB (15.4 GB usable)