Alex,
Sorry to hear you are running into this issue. I would recommend you the below alternate approach to download ME 8.5. Please follow below mentioned –
1. Open http://myeclipseide.com/module-htmlpages-display-pid-4.html
2. Accept the license agreement and click on [Download] link for MyEclipse 8.5
3. This will redirect you to the next page, please choose *All-in-One installer for Windows*
4. Please ensure you validate the file size and md5sum of the downloaded installer file to that mentioned in the site
File size: 825.84 MB
MD5 : a9038148dcde9066abc3711bf8ee636c
Let me know how this works for you.