I just installed the latest update, 0.8.25 and all was fine. BUT, after giving in to the nagging blue bar telling me some Kindle plugin has been updated, I did so the activated it -- some plugin that would enable me to control folders, etc. on my Kindle from Calibre. NOW try as I might, Calibre refuses to read my Kindle...no communication, no nothing! I even tried reinstalling Calibre, but still nothing.
Can anyone please help me??