Not been able to reply sooner but for me V1.13 works perfect thanks for the work put into making it Ephemerality.
Unfortunately none of the books I have in my small library work. of 11 books 2 produce a x-ray file 9 crash the builder out usually failing at the unpack stage. The 2 xray files when loaded into the paperwhite give the "X-Ray is not available for the book" message with the centred "WG" at the bottom of the message window. I'll keep abreast of the thread just in case anyone manages to find a working solution to my issues
Rikki