Almost every time I use netinstall, I see this problem.
The router appears in the selection window, I select it, I select the packages or the predefined group I want, and I click on the Install button. Instead of netinstall doing the installation, it just reports, “Selected N package(s).” It never installs – it just repeats the same advisory until I quit out of netinstall and re-launch it, whereupon the router appears in the window again, i select it, I leave the selection set to “Previous install” (which at that point represents what I was trying to install before I quit), and at this point, the Install button will perform the installation just fine.
A related behavior is that maybe a third of the time I use netinstall this happens even if I don’t select packages (leaving the default set to “Previous install”). I get the advisory message until I quit and relaunch, at which point netinstall starts installing things again.
I’m not sure whether the behavior is related to changing the packages, or the time it takes to change the packages (rather than just slapping the install button very soon after launching).
It’s not a critical bug, but it’s a pain, and if I’m not the only one seeing it, I’ll report it formally to support.