A lot of times the texture fix can be fixed by fixing the urls:
Open the map
save it errors and all
open the save with notepad++
hit crtl H for find\replace
find all instances of "www.general-chaos.com/"
replace all with "http://www.general-chaos.com/"
click replace all.
load the save.
Fixes 90% if these maps

Yeah, I get a lot of that and there's really not much I can do about it unfortunately. TTS models are all referenced online; if (when) hosting sites purge data, there's no getting it back. I also have some (not all, some) friends who can't see models that I can and frankly that stumps me too.

it wont load a lot of the walls/textures :(