I had v5.30.6063, the problem started with the version prior to 6063.
I have manually downloaded the builds, I did that last time and this time and they seem to install without problem retaining my registration information.
I just think it would be very convenient if I could update from within the program as I have done in the passed.
I tried turning off Windows Firewall when checking for updates, it didn't help.
I don't have proxy server turned on.