3.5.2 update downloading but not installing

I have studio one 3 pro, I can download the new 3.5.2.4xx update, but as soon as the download reaches 100%, the studio one program closes completely, it never installs the update. When you relaunch the program, it shows previous version not 3.5.2.4. Windows is up to date, no issues with S1 prior to downloading the update.

Home built pc, Asus Z97pro ****** Board

Intel i7 4770k