You’re right – the files do not exist on the ftp. But the files do not exist in the enfold package from themeforest, too. Please take a look at the screenshot below. I just downloaded the whole package.
The folders are not included.
/enfold/config-layerslider/LayerSlider/js/
/enfold/config-layerslider/LayerSlider/css
I uloaded the folder again, but it still does not work.
Another problem is that I can not export the Slides.
have you looked at it?