This is odd! I never had any problems of this sort before, but I removed a mobi file from my Kindle (via Calibre) in order to tweak the original epub. When I converted it back to mobi and transferred it to my Kindle, no more page numbers! I looked at the doc files, and sure enough, there was no APNX.
I tried this with a second book...just removing it w/Calibre and re-transferring it back to my Kindle. Again, no more APNX with the page info.
This has been an invaluable tool, with the means to add a page-numbering system when I read. It's gone now.
Using version 0.8.53. Any clues? Something in the output that I'm missing?
Help!!!