I had loaded the new client the first day, then not again until yesterday.
When I tried yesterday, I kept getting the corrupt database error, please reinstall - tried over a half dozen times.
Finally I duplicated my Main client, changed my options.txt, and was able to open that client.
This morning, that one is getting the same error.
So to play newchapter, I would need to again duplicate my Main client, do the newchapter update…