Looks like we’re all confused. What I’m trying to figure out is if Rhino 6.0.17348.12501 (the version in your screen shot and in the installer) is asking to install itself. It should not be that Rhino tells you there is an update if the version numbers match - but there have been bugs in this code before.
It sounds like the above description is not what is happening for you - I believe if it did, the installer would say “already installed”.
But it does sound like the installation process is taking a long time - 7 minutes and 44 seconds between “An update is ready to be installed’” and the user account control dialog? That’s really, really weird, and not something I’m seeing here.
Yeah, you install a lot of WIPs
The trouble is that these are log files, and they’re there so that when you email tech support saying that something went wrong, we can get the log files and see what went wrong. If we automatically deleted them, that wouldn’t be possible. Perhaps it makes sense to clean up the logs automatically if installation is successful, however. (Logged as RH-43133).