Originally Posted by Nyssa
Thank you so much for asking. I was curious as well.
Thank you for explaining! Off to install....
You only need this plugin if you are not using "Send to device" when sending files to your Kindle. "Send to device" automatically generates and sends the APNX to a the Kindle with the book. This plugin is only needed if you already have books on your Kindle you want to create APNX files for (and you don't want to re send them).