Sometimes when using Calibre's Edit Book's spell checker I encounter ePubs that display
no potential spelling errors even when I can see there are some errors, which contrasts with most epubs where the spell checker will show hundreds of
potential spelling errors even when a review of the list confirms the words are not spelled incorrectly but just a bit more 'sophisticated'.
I haven't figured out what is unique about those problematic ePubs that display no potential spelling errors (edit check indicates 'no problems' for the ePub structure itself), so I have set up a small sample extract ePub and for good measure have prefaced the extract with a few words that should definitely appear in the spell checker display.
The sample "test author - test book.epub" is at the following link:
http://www73.zippyshare.com/v/XKrw3170/file.html
Thanks in advance for any suggestions on what I would need to change within the ePub so that the Calibre spellchecker will display the potential spelling errors.