If you logged into extendd before 12/2/2012 at 4:00PM PST and downloaded your plugin, you may need to manually download the latest version again. There was a spelling error in the core settings API where it would validate the plugin but show the wrong error.
Custom Login Pro users
The settings API was called late and would not show up, there for you can’t activate your license to receive updates. Please login and download the current version >