Hi, jgoguen.
I have been using this driver for a long time without major issues

However the latest version (2.7.2, in Calibre 2.62) no longer adds the "hyphenation.css" file to kepub despite having activated the "Hyphenate files" option.
I uninstalled the driver, delete "device_drivers_KOBOTOUCHEXTENDED.py", reinstalled all and reactivated the option. Unsuccessfully.
The only change made in my Kobo Aura HD is downgrading the firmware (from the current version to 3.12.1, which I like more).
The driver avoids adding the .css with previous firmware versions?