HaloMods "Classic" Read-only Archive

hey i'm trying to pmi every non-usable vehicle in to bg but whenever i rebuild the map i get an error saying:
a dependency was referenced that does not exist
build/sound/sound enviroments/(something about mountains)
referenced in blood.xml
i opened the sound environments folder(in windows explororer, not hmt) and that folder was empty i also searched for blood.xml but found nothing
this is the first time i have gotten the sound environments error, but not the first time i have gotten the blood.xml error
anyone know why?

ummm idk i always have problems with pmi i can never get it so i ask my friend...

please only post if you know why.....
btw i have pmi problems too look in the tutorials section and look for a topic called video pmi tutorial or something like that