We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
ToC style issues
I am having trouble publishing a document. I repeatedly receive the error, "There do not appear to be any chapters in your table of contents. This suggests that you need to properly set chapter divisions in your document." yet I follow the style guide, and use the heading 1 style for the title, prologue, and all chapter names (I do not have subsections), and normal style for all body text. I am using MS Word 2013.
Please help. This is very frustrating!