Norton Antivirus quarentined my copy of Silentpatcher.exe -- this kept the game from launching. Once I beat up on Norton, it let me use the program under protest. I am using Norton 360, version 4.2.0.12 under Vista.

It shows the program as high risk: "A program was behaving suspiciously on your computer".

Once I restored the file, Istaria came up properly.

I have norton telling me what it does, others my have it act silently and not know this has happened.