[thiago.eec]

Originally Posted by jhowell

You should be able to import and convert books in KFX format as long as they are downloaded with K4PC version 1.26 or earlier and the latest DeDRM tools and KFX Input plugin are used. Make sure you remove and re-download books that may have been downloaded using a later version before import into calibre.

Ok. I'll try deregister, clean up, and reinstall.

Originally Posted by jhowell

I haven't noticed any cases of AZW3 format being missing fonts that were included in KFX. If you have an example I would be interested in finding out more.

It happens a lot here. Example attached (ASIN: B009M84ZXE).
Besides removing the font file, the AZW3 has its CSS like this:

Spoiler:

@font-face
{
font-family: "TemaCantante";
font-style: italic;
font-weight: normal;
src:url(XXXXXXXXXXXXXXXX);
}
@font-face
{
font-family: "AT Sackers Gothic";
font-style: normal;
font-weight: light;
src:url(XXXXXXXXXXXXXXXX);
}
@font-face
{
font-family: "Garamond Three";
font-style: normal;
font-weight: normal;
src:url(XXXXXXXXXXXXXXXX);
}
@font-face
{
font-family: "Garamond Three";
font-style: italic;
font-weight: normal;
src:url(XXXXXXXXXXXXXXXX);

The path for the font file is replaced by this X's. The font file is also not present.

Originally Posted by jhowell

You are usually better off using AZW3 format as a source for conversion. The contents are closer to the original format provided to Amazon by the publisher when compared with KFX.

Sure, AZW3 is a better format to keep (and edit/convert). KFX seems to have a terrible markup inside (as the converted EPUBs indicate).