Assuming your epub is an epub3, since you have a nav.xhtml:
— Erase toc.ncx
— menu tool/ Table of contents to open the ToC interface
— Close it with "OK"
A new ncx should have been generated from the nav.xhtml.
(If not, try to modifiy something in the toc, using this interface, and save the ToC)
Check that everything is OK, and make a book-check (F7) before to save the epub.
Last edited by lomkiri; 03-20-2022 at 05:05 PM.
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