i am new in this forum but I use calibre since a long time.
Now I have a Problem with an AZW3-File I want to convert to epub.
Calibre shows an error, the last line in the error-log is "invalid start byte".
The same error-message appeares when I want to view the Book in calibre.
The File seems to be correct, because Kindle for PC shows the book correctly.
calibre Version: 0.8.5.6.
Does anybody know a solution?