[spike1]

I've been wrestling with problem after problem for the past few days.

My first problem was getting a logical TOC to work. I'm using LibreOffice. Convert to word, either doc or docx and the only thing that comes up for the device menu is "Cover."

So, someone suggested sigil. That worked.

Then, I realised it didn't look too good. I'd been using block paragraphs and decided to do it properly, indenting.

That's where LibreOffice failed me.I was on V5, Ubuntu 16.04LTS and saving as HTML, doc or docx lost the indentation... So...

Bite the bullet, upgrade to 18.10LTS and bingo, indentation now saved correctly.

Only problem now is, sigil no longer works. The epub file now fails to load into KDP producing the oh so helpful....

We couldn't convert your HTML file to Kindle format. Please make sure your file is properly structured. If the problem persists, try uploading your book in a different format. Refer to our formatting guide for more information.

message.

HELP! I'm so close. Why is it suddenly failing? What setting do I need to set to get it to work? I've tried switching from epub2 to 3 and back with no joy.

What's happened to this program that suddenly it fails?

Oh, version number... Version I'm failing to use now... 0.99.
Sorry, didn't note down the old version that did.