I ran the installation and got to the Installation Complete message with instruction to reboot.
On the first reboot, AV Wizard did not start, but Launch Manager started, though after a while it seemed to hang when "Activating Orbiter".
After a new reboot, AV Wizard did start, so I went through it - all ok, but then again Launch Manager hangs when "Activating Orbiter". The previous row says "Not starting device 20 onscreen orbiter binary not found" and something like "maybe because it is in the middle of installation".
What do I do? I left it for an hour or so (in case it was actually in the middle of installing), but nothing changed.