In your xLander documentation it shows a pic of required plugins. One of the plugins shown is the "Qodux" plugin. My installation of Xlander did not include an option to install this "Qodux" plugin. "quodx" plugin was never shown as an option during my installation.
What the issue here???
Please go to themeforest and download the theme again. I don't know what documentation are you seeing but xLander doesn't have Qodux plugin. Only lune, powernode and minutes have. This plugin is basically the admin option panel.
This is the documentation for xlander: http://qodux.net/files/docs/xlander/