[Plugin: Posts 2 Posts] each_connected not working post-upgrade

Hi and thanks in advance for your help! This is a great plugin. 🙂

I am having trouble with an each-connected loop after upgrade to 1.4 from 1.3.1. Here’s a pastebin with the registration and template code:

http://pastebin.com/VXU2ehhe

In 1.3.1, everything works as expected; in 1.4, the “series” level data shows up, but not the “books” foreach loop data. I’m not seeing any errors. I’ve tested on two separate sites running the same code and have the same issue in both places.

This is the one site which is somewhere visible (for now) running 1.3.1: http://new.sherribrowningerwin.com/books/ On this page running 1.4, the cover of Grave Expectations disappears as it’s part of the foreach loop. Everything else remains the same.

Thanks so much for your help!

http://ww.wp.xz.cn/extend/plugins/posts-to-posts/