Originally Posted by Koosh
I can view the book in Calibre so I was really confused as well. I wouldn't be surprised if the fonts are not supported since the document I'm having trouble with wasn't created with the intention to be put on an e-reader. Nonetheless, I fixed it by reconverting it. So all's good!
Could you teach me more about reimporting the html from a document and convert from that instead? I believe that would produce a more "clean" conversion without any of those special fonts corrupting the conversion.
Happy to hear you got it fixed. For mobi/azw3 books I user a plugin called Mobi-unpack. You can find where all the other new Calibre plugins are listed in preferences. It basically unzips the books like you can do with a epub to a folder on your desktop. Inside you find the html file. You can use that to edit to your liking. I use Word to edit mine. You then just drag the html into calibre and convert to format of your choice.
I only do this when I need to pretty up a book. I own alot KDP books that need major fixing. Calibre also has in Look n Feel conversation tab a place to remove fonts, colors....etc. I keep those checked to get a good clean copy.