Does this guide still works? -
PhotoPost Enhanced vB3 Index Integration
In that thread, it was mentioned to add two lines under under these four:
// ######################### REQUIRE BACK-END ############################
require_once('./global.php');
require_once('./includes/functions_bigthree.php');
require_once('./includes/functions_forumlist.php');
include('./photopost/inc_features.php');
include('./photopost/inc_photopost.php');
But when I tried to do the above, I found the following in my forum/index.php
require_once('./global.php');
require_once(DIR . '/includes/functions_bigthree.php');
require_once(DIR . '/includes/functions_forumlist.php');
I tried to just follow the instructions but it came out blank on forum home.