You cannot add adsense code through the usual admin menu edit screen, WP will strip out the script portions, which is pretty much everything. Is your intent to have adsense content be an actual menu item? That sounds very strange to me. Or are you just trying to get ads to appear immediately after the real menu items and adding the code as an menu item seemed like a way to achieve that?
You can have ads appear immediately after the menu by adding the adsense code to the menu HTML through the “wp_nav_menu” filter, assuming wp_nav_menu() is what your theme uses to output menus.
BTW, it’s counter productive to attempt to bump your topic by replying to yourself. The position of your topic in the forum listing does not change, but adding a reply takes your topic off the “No Replies” list, which most experts here use to find people needing help. By bumping, you effectively hide your topic from the people in the best position to help you! Additionally, topics here are answered by volunteers generous with their time. 15 hours is not an unexpected time to wait for an answer, especially on a weekend. If getting an answer is so urgent, you should consider hiring professional help. One such resource is jobs.wordpress.net. Response there may also be slow on weekends.
