Installed plugin. There are many issues with this plugin. Mostly the issues can be revealed with enabling WP_DEBUG to true in the wp-config.php file. Other issue are deeper like calling the options.php file when saving the Settings panel. Thie was deprecated in WP 2.7!
Notice: options.php was called with an argument that is deprecated since version 2.7! The fse_df_wp setting is unregistered. Unregistered settings are deprecated. See http://codex.wordpress.org/Settings_API