[slowsmile]

@Kevin...Thanks for that advice on the plugin utils. I've already been investigating these utils and the change to using the epub_zip_up_book_contents and other utils certainly seems workable. My own utils in the plugin can handle the rest I think.

I'm really just trying to minimize the hit on the plugin by making such radical changes. Currently the function that splits the html file into separate xhtml files is quite complex and does somewhat more than just split the files(it also helps to create the doc TOC and Nav TOC and creates the title page as well). If and when I do implement these major changes, I think it will be later rather than sooner because I would prefer to first iron out any other minor error problems that arise with the plugin already out there before implementing such a major change.