Jenny, here is what I just did:
I went to the firewall page to see that it says that it is Norton Internet Security that controls the parameters of the firewall.
Under that phrase, it says that my home network is connected and that the public network is not.
I have WIN 7 by the way.
I then disable Smart Firewall in Norton and checked in Norton at the Smart Firewall configure page beside Program control if there was a Corrosion file in there. None found. (I learn this yesterday from Dan Peach).
I redownloaded the Installer for the game.
Got the page where to enter the serial number.
AND I got the same message: "An Internet Failure occured"
Now, I have this question: why was I able to download two games last week? One is the Carol Reed game and the other is Shadow on the Vatican.
And they use different kind of install.
Why then, if it is a firewall issue, that those games were not blocked?
Thanks for your help.

Chief

PS: I re-asked for a refund yesterday at TriSynergy. Will see what they say if they still answer.