tareq1988/wordpress-settings-api-class — pull request #4 by rinatkhaziev (2012-10-15 20:00:58+00:00)
Title: Prevent PHP Fatal errors when the class is included multiple times

Hey,

Really dig your plugin, and use it in a couple of my own plugins. The problem arises when you enable two plugins with the same code, it starts throwing Fatal errors. So to avoid that we need to check if class exists or not.