This thread is for the flyout *sidebox* menu, not the dropdown header menu. It would be better to post there to keep information in the relevant place.

Did you alter the file that makes the Information submenu? If so, you might have introduced a PHP error, which is what would stop it from executing like that. Are there supposed to be any more items in that submenu, or is </ul> supposed to be the next thing?

Answer these questions when you repost in the correct thread.