I'm sorry but, I can only repeat and confirm the only possible reason for this problem, is the Live Update wasn't able to download the required files. It might not be the antivirus, but also a firewall.
Run the FSDT Live update again, and try to disable the firewall too.
If you are sure all your antivirus and firewalls have been disabled, then it's possible your local Live Update node (we use 118 servers on the Cloudflare network, which are selected depending on your location ) still hasn't got the latest files we released yesterday.
In this case, download and install the current GSX Full installer will surely get you all the latest files, since they are included in the installer, so it's not important if you cannot download them from the servers.