This is not another "Why do you convert to PDF, it's such a loser format" and the like. There are legitime needs, like printing
After experiencing some crashes which forced me to test other versions, I noticed that version 4.2 and I assume all others appear NOT to embed any font that is NOT registered with windows.
My fonts are ALREADY in the epub, and many are not in the Fonts folder. The epub displays correctly in calibre, its viewer and in ADE - so fonts are "known" to calibre.
The forum appears to be silent on this.
Is there any solution to this?