Tome Builder Books Don’t Open in High Sierra

November 30th, 2017

Filed under: Tome Builder | Be the first to comment!

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.


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