I'm using the most recent version of Calibre with the Kindle Collections plug-in. I have no idea what I'm doing wrong. I've followed each step (to the best of my knowledge). I've created the new column in Calibre. However, when I try to do anything other than select the customization option, I get a message saying there are no books on my Kindle. I've re-booted. I've tried removing all my books and adding them back. Nothing has worked. HELP!!
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