Behemoth installation help

So, i have been trying for while to install behemoth theme to my website.
I was success adding IPS_Behemoth_Theme.xml and everything was looking good, but now i need to upload somehow sliders and footers (pages_templates) but im not able to do so.
I got this error on both files : 3C130/1 Something went wrong. Please try again. - But one file works and other doesnt.

So does anyone know how i can install sliders and footers and how i can make it connect with behemoth theme?