There have been other reports of people having problems downloading and installing v1.1.1 for MacOS. The Windows binary has a similar problem. Chrome considers it a defective/dangerous file and will only download it if forced. Windows 10 likewise blocks execution of the installer, as it is from an "unknown publisher". Indeed, looking at the file properties, most of them have been stripped, apart from the name Sumu and the version 1.1.1. I could override this, but it's such a basic breach of computer security practice that I don't want to do it. Please, rebuild the distribution binaries and republish them!