NETMF SDK package broken?

I tried to reinstall GHI Electronics NETMF SDK 2016 R1.exe today but it fails trying to download Dfu_Se_Demo

[10D0:1760][2018-10-01T09:44:26]e000: Error 0x80070002: Failed to acquire payload from: ‘’ to working path: ‘C:\Users\jobe\AppData\Local\Temp{89C329E1-394B-4BB7-9F83-38ACDBCB82EC}\DfuSe_Demo_V3.0.3_Setup_amd64.exe’

I have downloaded DfuSE_Demo directly from StElectronics but that does not seem to help.
The following manual links are suggested by the installer, but they are all broken (404)

Don’t install DFUSE via the installer - unselect it. Download SAMBA v2.18 and install that.
But if you don’t need DFUSE/SAMBA, don’t worry about it…