I've tried installing fallout tactics, using both firefox 3 and the gog.com downloader, but I keep getting a corrupted file, I think. When it sits on my desktop it is icon-less and when I try to run it, it goes to a screen saying it's checking the file integrity, if I let it run my computer locks up, if I skip it, it gives me the error in the picture. I'm guessing some how I'm not receiving the file properly, do I need to update my gog.com downloader?

Haven't gotten to play it yet, I'm at work! I had to install it right before going to bed.