Cannot install the theme

Hi,
I have purchased the theme yesterday and i’m trying to install it since morning on a PC (local host). The error i’m getting is “Could not copy file. HighendWP/options-framework/public/css/vendor/jqueryui/themes/smoothness/images/ui-bg_flat_0_aaaaaa_40x100.png”.

I would really appreciate your assistance on the matter.

P.S: i managed to install it on a MAC, but i need it to work on PC as well.

Regards,
Cristina