Indeed this plugin doesn’t work anymore with the latest versions of WordPress but there is a trick which still makes it to work.
In the Advanced section use a dummy css class for the “Exclude classes” field and that will do the magic. 🙂
Same here after updating to the latest version. Searched in google and a lot of sites using Page-Links-To plugin is throwing that warning. I think it is due to the fact that the author has updated the plugin today.
I usually download plugins to my pc and upload via ftp so I uploaded an older version and it works fine for the time being.
