[Stridr]

I just got a new Kindle Paperwhite 2 and am trying to load books on it. I'm "sideloading" DSM-free books onto it via the USB cable.

Some were already in mobi format and these worked OK.

However, most of what I have is in epubs. I converted these via Calibre into the "new" mobi format. I then tested them by opening them with the Amazon Kindle app on my Mac--they opened fine.

However, when I upload them to the Kindle, they do not open. They show up in the list of books conver view, or in the title/author lists, however when I try to read one I get this pop-up box: "Unable to Open Item. The selected item could not be opened. If you purchased this item from Amazon, delete the item and download it again from the Cloud on Home."

This happens with EVERY epub that I've converted via Calibre. Like I said, they open fine using the Kindle reader on my Mac.

What am I doing wrong?