Thanks David,

Kobo Ereaders

KoboTouchExtended is a free plugin for the Calibre ebook organizer application that adds an extended driver for the Kobo Touch, Kobo Glo, Kobo Mini, Kobo Aura HD, and Kobo Aura ebook reader. Luckily, fixing this is rather easy. Download Calibre, install the Kobo Touch Extended plugin and reformat the epub files. I made sure to split files larger than 20KB in the epub output, this allows for fast responding ebooks and the smaller size hasn’t got any impact on your reading experience. When I use KoboTouchExtended to convert my books from EPUB to KEPUB, it introduces superfluous hard returns throughout the text and utterly borks the formatting. I can't believe I'm the only person who's noticed this. Is there a better way to convert my epub files to kepub in Calibre?

Kobo Touch Ereader

Here's the chunk of the log associated with sending the book:

But, as I’ve noted before, they also support Kobo’s own extended version of the EPUB format, called KEPUB—used for the books Kobo sells from the store, or for DRM-free EPUBs that readers convert and sideload themselves. KoboTouchExtended: This is a device driver plugin extending the capabilities of the existing KoboTouch driver provided with Calibre to enable extra Kobo features. Please note: modified books are not saved back into your Calibre library to prevent issues with overwriting library configurations, so books get converted in transit to your device.

Kobo Touch Extended Driver

Kobo Download

Job: 4 Upload 1 books to device:American Gods started
Device using plugboard epub KOBOTOUCHEXTENDED None
Setting metadata in: American Gods at: /var/folders/xg/s58z3m2x3b3d8_9__gb14rcw0000gn/T/calibre_1.0.0_tmp_msFmWy/JcfWxpcaltmpfmt.epub
DEBUG: 11.3 KoboTouch:upload_books - 1 books
DEBUG: 11.3 KoboTouch:upload_books - files= [u'/var/folders/xg/s58z3m2x3b3d8_9__gb14rcw0000gn/T/calibre_1.0.0_tmp_msFmWy/JcfWxpcaltmpfmt.epub']
DEBUG: 11.7 KoboTouch:get_extra_css: Using extra CSS in /Volumes/KOBOeReader/kobo_extra.css (1 rules)
DEBUG: 11.7 KoboTouch:upload_books: Processing book: American Gods by Neil Gaiman
DEBUG: 11.7 KoboTouch:upload_books: file=/var/folders/xg/s58z3m2x3b3d8_9__gb14rcw0000gn/T/calibre_1.0.0_tmp_msFmWy/JcfWxpcaltmpfmt.epub, name=American Gods - Neil Gaiman_546.epub
DEBUG: 11.7 KoboTouchExtended:_modify_epub:Adding basic Kobo features to American Gods by Neil Gaiman
DEBUG: 11.7 KoboTouchExtended:_modify_epub:Failed conversions will raise exceptions
DEBUG: 11.8 KoboTouchExtended:_modify_epub:Calibre details file :: /Volumes/KOBOeReader/driveinfo.calibre
DEBUG: 11.8 KoboTouchExtended:_modify_epub:Driver data file :: /var/folders/xg/s58z3m2x3b3d8_9__gb14rcw0000gn/T/calibre_1.0.0_tmp_msFmWy/aYJtGx_KoboTouchExtendedDriverInfo
Copying file '/var/folders/xg/s58z3m2x3b3d8_9__gb14rcw0000gn/T/calibre_1.0.0_tmp_msFmWy/aYJtGx_KoboTouchExtendedDriverInfo' to '/private/var/folders/xg/s58z3m2x3b3d8_9__gb14rcw0000gn/T/calibre_1.0.0_tmp_msFmWy/fO6PDc_epub_container' as 'driverinfo.kte'
{'smarten_punctuation': True, 'extended_kepub_features': True, 'replace_lang': False, 'hyphenate': False, 'clean_markup': True}
KoboTouchExtended:common:modify_epub:Found cover image ID 'x_9780061792663_49'
KoboTouchExtended:common:modify_epub:Setting cover-image property
Forcing cleanup for file OPS/9780061792663_cover.html
Forcing cleanup for file OPS/9780061792663_other_01.html
Forcing cleanup for file OPS/9780061792663_title.html
Forcing cleanup for file OPS/9780061792663_other_02.html
Forcing cleanup for file OPS/9780061792663_dedication.html
Forcing cleanup for file OPS/9780061792663_contents.html
Forcing cleanup for file OPS/9780061792663_epigraph.html
Forcing cleanup for file OPS/9780061792663_chapter_01.html
Forcing cleanup for file OPS/9780061792663_chapter_02.html
Forcing cleanup for file OPS/9780061792663_chapter_03.html
Forcing cleanup for file OPS/9780061792663_chapter_04.html
Forcing cleanup for file OPS/9780061792663_chapter_05.html
Forcing cleanup for file OPS/9780061792663_chapter_06.html
Forcing cleanup for file OPS/9780061792663_chapter_07.html
Forcing cleanup for file OPS/9780061792663_chapter_08.html
Forcing cleanup for file OPS/9780061792663_chapter_09.html
Forcing cleanup for file OPS/9780061792663_chapter_10.html
Forcing cleanup for file OPS/9780061792663_chapter_11.html
Forcing cleanup for file OPS/9780061792663_chapter_12.html
Forcing cleanup for file OPS/9780061792663_chapter_13.html
Forcing cleanup for file OPS/9780061792663_chapter_14.html
Forcing cleanup for file OPS/9780061792663_chapter_15.html
Forcing cleanup for file OPS/9780061792663_...