The problem still bugs me. I did found this
thread discussing the exact problem I did have.
To summarize:
- removing books.db lets the PRS-T3 recreate it (I did not test T1/T2)
- in books.db the field mime_type is now filled with "application/epub+zip" for every book (but all past annotations, etc., are now lost)
- you can now make annotations for all present books and see them (for the current book and for all books)
- adding books manually (via windows: creating sub-dir, copy file) provides similar results
- but adding books via calibre (USB) results in a books.db afterwards in which field mime-type is empty for all the newely added books, so inspecting the made annotations (at least on the PRS-T2/T3, the T1 does not seems to mind it) result in a crash: "Sorry! The application Reader has stopped unexpectedly. Please try again. Force close."
I tried several PRS-T1 driver settings/unsettings, old book files / newly edited book files, but nothing seems to work. But it had worked in the past up to april 18, 2014, as the books.db revealed on both my PRS-T1 & T2.
Go figure
