We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
serious issue -- urgent deadline -- is there a glitch
I cannot raise a Support ticket because this is due tomorrow.
Is there a glitch in the epub converter.
When I upload with H1, it says:
We experienced an unknown issue while trying to convert your file to an EPUB.
Note: You can also choose one of our eBook conversion packages and let us create your eBook for you.
When I remove all heading styles, it tells me I need them. I add one H1, it tells me again unknown issue.
I have saved as RTF, word doc 2003, docx.
Please, anyone who can look into the system and check it. I gave my word.
This is a standard type file which I have done many of.