Originally Posted by theducks
I did not get to lockup stage before I rolled back to the Nov FW.
Have you check the filesystem the file is stored on? It may be damaged :/
You might try a fresh conversion with the latest Calibre (.44). Things get improved every week.
What does another EPUB (on the PC) Viewer do with that file?
I will try finishing my reading using Calibre's viewer and see what happens.
Yes, there's new versions of Calibre and even new firmware for the PP coming out - so many chances it may get fixed, you are correct.