[Strether]

I've tried to do a search for a solution to the problem, but am not coming up with anything. No doubt, I'm not using the right terms to bring it up.

Anyway. Calibre is showing that my Kindle 4 has 4 more books on it than the Kindle shows. I've identified three of them--all by the same author. Calibre says they're on the device, but the Kindle doesn't show that they're there.

I've tried deleting the books from the device and Calibre and downloading them again from Kindle for Mac, but the problem recurs.

Interestingly, when you transfer them to the Kindle again and unplug from the computer, you can see the titles briefly on the Kindle, but after a few seconds, they go away.

Not a huge problem, because they transfer to my Kobo with no problem and I can read them there, but the problem bugs me.

Any ideas?

Jim