Hello.
Ran Sigil-1.9.40 on a MacBook Air with an Apple M1 chip.
macOS: Ventura 13.1
No problem.
Opened an ePub book containing a PDF file without any message about embedded PDF.
Installed the ReadiumReader plugin (from here:
https://github.com/Sigil-Ebook/Readi...ses/tag/v0.4.0).
Launched with this open book. Everything shows.
In the language settings, the language "Ukrainian" appeared, without suffixes. Now all context menus and buttons with translations.
If there are any special instructions for checking, write, I'll try to do it.