Tome Builder Books Don’t Open in High Sierra
November 30th, 2017
I recently updated my Mac to macOS 10.13, High Sierra, and uncovered a major problem in Tome Builder on 10.13. When I opened a book, the following alert opened:
It turns out the error is caused by a bug in Core Data, Apple’s framework for storing application data, on macOS 10.13. Tome Builder stores a book’s contents as styled text instead of plain text. Storing styled text triggers the Core Data bug when opening a book.
To fix this issue I have to change the data model to store the book’s text as plain text. This change is causing problems with tagging text. I will release a new version of Tome Builder when I get things working again on macOS 10.13. Don’t use Tome Builder on High Sierra until I release a new version or Apple fixes their Core Data bug.