Please make sure you have a Slider named CF in the Revolution slider menu
If your slider is with another name ‘Alias’ please copy the shortcode of the slider and add it to the page in question.
You can find the CF Revolution slider in the folder you downloaded from themeforest
If you can’t find it, please let us know.
You can find a version of it here http://support.creiden.comwp-content/uploads/2015/09/CF.zip