system
8
Alienjoes log simply means he can’t connect to the site. There’s no other explanation needed. If he can contact http://cat.asw.cz from the browser, there must be the investigation done, who does stop the traffic to the avast.setup (usually wrongly set-up firewall).
If he cannot contact cat at all, there must be something deeply rotten in his system, but beyond the point of the installer itself.