im trying to download southern region but it keeps saying the files are corrupt

ive downloaded mozilla fox and i think it has worked

Edit:
whats the difference between vanilla mode and promods because im new to this

its the def file that keeps saying unsupported command

ive just downloaded google chrome I was using the standard google site

I'm using google

it comes up with unsupported command

im trying to download the archives onto my computer it gets far as save button once click on it it says there is a problem what can I do