child_of returns nothing?

Sorry for the multiple posts, but I realized the others are “resolved” so I probably won’t get any replies.

I cannot get child_of to return anything. I’ve set up my pages as children. I try and use the code verbatim from wp_list_pages() so I can list the subpages as a sub-nav in my template.

It won’t work. I can’t get it to list the subpages. Any insight, links, that might shed some light on this would help. I cannot seem to figure it out yet.