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: ‘https://www.ghielectronics.com/downloads/NETMF/SDK/DfuSe_Demo_V3.0.3_Setup_amd64.exe’ 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)

https://www.ghielectronics.com/downloads/NETMF/SDK/sam-ba.2.12.exe
https://www.ghielectronics.com/downloads/NETMF/SDK/DfuSe_Demo_V3.0.3_Setup_amd64.exe
https://www.ghielectronics.com/downloads/NETMF/SDK/DfuSe_Demo_V3.0.3_Setup.exe

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…