We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
attempting children's book conversion to ebook through Open Office 3.1
Having trouble applying the headings apparently to my full color page children's book. Because for some reason it keeps getting rejected on conversion to epub stating there is no TOC. ?? Any help would be much appreciated. Last ebooks I made through Microsoft Office Word, but I never registered it so unable to use it anymore.