Hello, I have installed windows vista x64 in my machine and I couldn't for some reason install TDU normally. It gave me an error regarding ISScript11 so I installed ISScript11.msi located in the TDU dvd and I didn't get that error anymore but then when I started setup, it configures the installation but then it says "Installation Ended, The installer was interrupted before TestDrive Unlimited could be completely installed...".
I installed TDU in another machine and copied the Atari folder to my computer and it works. But now I want to install the 1.66A patch + Megapack and both installations keep saying: "There is no Test Drive Unlimited installed on your system".
What can I do?