[smw]

If you want to modify the database yourself, copy mobilesheets.db to your PC, install SQLiteStudio or another SQLite client (https://sqlitestudio.pl/features/), and then run this query on your database file:

UPDATE AnnotationsBase Set Version=0 WHERE SourcePageWidth = 0

I believe that should fix it. You can then copy mobilesheets.db back to your tablet and restart MobileSheetsPro.

That did it.    Thank you!

...but because I'm paranoid, I saved a copy of the database on my computer before editing it.  If you'd ever like a copy of it, please let me know.