It sometimes fails with an error for German webpages, i think it's maybe because of one of the characters with an umlaut in the name or author: ä, ö, ü.
FUNCTIONAL & WORKING GREAT except that the Table of Contents on the created ePub file does not work (Webpage being referred to: http://www.gutenberg.org/files/28416/28416-h/28416-h.html#toc35). Hope it would be fixed. Thanks very much to the creator NiklasG.