Thanks a lot,
I''ve tried "new" setting and it does not work on Kindle 4 or kindle Paperwhite, error message says can not read the file, please re download from Amazon.
My Kindle 4 runs version 4.1.1 so "new" format should be rendered according to MobileRead WIKI
https://wiki.mobileread.com/wiki/KF8
"Both" setting works and renders on Kindle 4 or kindle Paperwhite with bug, same as AZW4
https://www.mobileread.com/forums/sho....php?p=2621494
Clearly generated with Calibre file is not the same as in "Bulgakov" example above. I can't open it with 7zip, while "Bulgakov" example opens without error.
Is there any way to make "new" setting to work?