It's called ***heuristic scanning*** and nearly every antivirus does it these days. Something the game .exe is doing resembles something that some virus did at some time. The only way I can see to avoid these false positives is to submit your game .exe to all antivirus companies before the game is released so they can test it and mark it as safe.
Thank you Jenny 100 for this comment at the Discussion Forum.
If I understand this correctly, Norton is doing it's job on my computer.
And so, since I bought the game on February 9th, all this discussion, e-mails I sent to TriSynergy and Plimus and suggestions on what I should do to run the game, it comes down to a simple comment.
Now what will be done to help the gamers?
PS: and since then I bought Amber's Blood and Shadow on the Vatican, both downloads and no problems.
Having these two games to play and no solution and the near future, I asked for a refund of Corrosion.