Ignore the error popup window when you first launch and you should be good to go, i've had no issues and usually Fallout 3 is a total mess on modern hardware. Reliving this game is nothing short of amazing. 0 crashes and thats even with ALT+Tabbing in and out whenever I feel like it. Solid release.
Downloaded it, attempted to start it and it just goes to a black screen. Tried 3 times and finally gave up. Broken junk that won't start, should probably take this off the store. I have an i7 and a 4070 so maybe it's because i have a modern PC but i haven't had any other game just not start like this one, when i alt+tab i could see the starting screen and hear the music but as soon as it's maximized its just a black screen. Worthless broken junk. Wish i could refund.