Hi Tor,
Just for your information, I could not install the new 2025.1.2 with update center. Or, the installation of Guide probably worked, but not the included update of PLUS+ Base, that was needed to run 2025.1.2. It said that I have to close update center for the installation to continue. And update center refused to be closed, since the installation of Guide is in progress...
However, thanks to your tip above, it worked when I shut down the update center and then used the downloaded installation file for Guide. (I had to do the same for service tool.)
Attached are a few screenshots of the fault, for information.