Project 1999 Files (V36) FAILED

[TheSchwartz420]

I'm trying to get everything working to play on P99, I am following the instruction guide on the forums when I run into a problem. I try and download the Project 1999 Files (V36) from the forum quick start guide, it starts to download and then says failed. One or two times it finished the download but it popped up and said this. ! C:\Users\Addam\Desktop\P99Files36.zip: The archive is either in unknown format or damaged

Any help would be appreciated. thanks