Just doing a new install of 17.4 on windows 10 following the Kodi for dummies guide. When I get to the add fusion installer source portion, I enable unknown sources, click yes, back out, access file manager, click add source but the add source input box does not appear. Have done a couple of reboots to my computer and reinstalled Kodi once with no change. Am I missing something here? All suggestions gratefully accepted.