Hi @jacknife
As Elliot says in the post you’ve linked the post object field is not appropriate for large amounts of posts in ACF before ACF 5.0 (pro).
Your issue is that your server can’t handle the amount of posts queried and you get a timed out issue which stops the pages render right before the field would be.
My suggestion is that you look at ACF 5 and get that instead of ACF 4. If you have already bought any of the addons it will be a free upgrade and otherwise it’s still sooooo worth the little money it costs. It’s by far the most value for money plugin I’ve ever used.
