I've downloaded all the parts to GWX. However, when I click on the .exe file it is displaying an error prompt almost as soon as it starts installing - terrain data bfd., corrupt file.
I've tried different .exe files from the mirrors but they either similarly display that error prompt, or another one just saying corrupt file.
Very frustrating!

I'm sure it's an elementary problem with an easy solution, it's just I can't see it! LOL
I'd be glad of any help.