Try to download it using a different browser.
Also, make sure any antivirus software is paused or turned off during the download and installation. I have had many downloads and installations corrupted by antivirus software removing what it thinks to be a virus or malitious software.
I tried it, the problem is still
The problem is with you. The content gets damaged by a router or server-side filtering software. That's why it's hosed up on all 4 machines and with all browsers. check your network setup and configuration.