Jim Adcock wrote:
Not at all. The epub files I generate validate with epubcheck and the TOC displays correctly on a ADE readers.
You are leaving out the TOC element in the guide structure of the epub files. While it is legal to do so in EPUB [not MOBI], that ADE displays a "TOC" [actually the NCX guide structure] even when you are leaving out of the guide can be considered "an extension" at best, a non-conforming behavior of ADE at worse.
From the epub spec:
Within the package there may be one guide element, Reading Systems are not required to use the guide element in any way.
The guide is optional on both sides, the publishing side and the consumer side. If Amazon makes it a requirement to have a guide in the epub they clearly didn't understand the spec. -- Marcello Perathoner webmaster@gutenberg.org