[SteveC100]

Good idea, thanks.

If I edit the file in Sigil 3.4, it validates, but tells me that the file refers to some fonts that it doesn't embed. That's expected. I get the same message before and after adding a cover.

But with 4.0RC I get some new messages.

I've attached a screenshot. Hopefully that'll come through. The first five errors appear with both versions. The last four only appear with version 4.

Thanks,
Steve