I have a site that is all database driven that the has been in the network for a couple of months. It now won't validate and the error message does not say what page didn't validate like it used to. If I knew which page, I could fix it. How is it posible to find which page is causing the problem.
I updated it and rebuilt the site when it didn't validate the first time but it still didn't validate
I deleted all the text in the ad_network_ads.txt, rebuilt the site. The ads are showing but the site its still not validating.
Is the include code directly in the main PHP file, or is it included in another? Are you doing any includes with a URL instead of a filename/path? It looks like the $_SERVER['REMOTE_ADDR'] isn't being seen properly by your server for whatever reason.