sap0

Wow, 4 months later I am getting the exact same error message.

And no one ever responded to this post, much less fixed the problem?

We seem to be having a Vaudeville-esque lapse in communication here, as often happens on support forums. Please read carefully what I am asking and I would be very grateful for a reply:

I do not want to list posts from all three categories. I want only the posts that are cross-listed simultaneously in all of a set of multiple categories.

To explain, I am putting each of my posts in multiple categories.

So, one single post might be in both the “french cheeses” category and the “bleu cheeses” category.

In the above example, I do want to create a hypothetical list of all “French bleu cheese” posts, that is, those posts that are categorized as both “french cheeses” and “bleu cheeses” at the same time.

I emphatically, absolutely do not want to create page that just lists all the posts in category A and all the posts in category B.

is_category(array(9,’blue-cheese’,’Stinky Cheeses’))

But if I’m not mistaken, that would create a list of all posts in 9, all posts in blue-cheese, and all posts in stinky cheese, correct? In my example, that would just list all posts in the “France” and “breakfast” categories, which would be useless.

What I am trying to do is create a page that lists all posts that are simultaneously in BOTH of two categories, e.g., a list of all posts concerning French breakfasts, NOT a list of all posts concerning France and all posts concerning breakfast.