There can be many causes that makes this application stop working (a failed auto-update, a missing file, etc.). Therefore I recommend you to reinstall Automatic DJ. For a properly uninstalling go to Control Panel > Uninstall a program > search there Automatic DJ > right click on it > and select uninstall. After you finish the uninstalling process, download this application again, through Software Informer application's page. Next, open the setup file and start the installation process.