Hi,
Tried the first approach, but only seemed to get worse results with EpubCheck (I may have edited the line wrong).
But removing the entire meta line seemed to do the trick…
I did not write the line in the first place, so Sigil must have generated it, I guess. But if it is not needed any more, why? Is it because I am using an older version of Sigil (version 1.9.30)? Which unfortunately I have to use because it is the last version which runs on Mac OS 10.15.5 Catalina. Unless anyone knows how to run the latest version on Catalina, without resorting to compiling it myself or using MacPorts or Brew.
Thanks, everyone.
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