Sorry for all of the tomfoolery.
I just searched for posts_nav_link and found there is an issue with the Adhesive plugin that screws posts_nav_link.
Thanks for those who replied.
my apologies…it seems I am the one who is dense.
I meant to say posts_nav_link(), not wp_link_pages. I am in fact referring to posts and not mulipages within the same post.
My posts used to have links to previous and next posts and now they are gone
posts_nav_link is returning nothing.
Yep–
I’ve got 80 or so posts that were working yesterday. Really a big mystery that is driving me nuts 🙂