I tested GI on Vista64 where it worked without any issues. (Well, I am aware that this doesn't help to solve the problem... :bonk
It might help to set Vista to a compatibility mode for the game via right-click on the game icon --> properties.
The problem is that i'm not sure the SF version the thread author has is the updated one being sold by AGOED or the older one.
The Strategy First version is an older one.
SO i don't know if the AGEOD refunds policy should apply here or not.
Hardly, as the game was not sold by AGEOD.
Strategy first would be the ones to ask for a refund.
Surely Calvinus or PhliThib will know.
Indeed, they know everything!
Cheers
Norbert