I have the Steam version of Fallout 4, with all the DLC's and a pc way more powerful than it needs to be to run the game. They state that you can play this with the Steam version of the game, but after hours of trying and following every single step laid out on how to get it to run, it doesn't work. I might add as well that I never updated my game either, just turned automatic updates off and never played the next-gen version. I have following this mod for a while and never ONCE did they mention this was a conversion mod! I was under the impression it was a new area we could explore with current save games, NOPE! Also to top it off, apparently if you do decide to use this, then you can never go back to vanilla Fallout 4 without completely uninstalling the game, re-installing (that means with the next-gen update too!), and having to go through the mess that is manually downgrading and hoping to god that it actually works and you can play the original again. This is such a disappointment for all the hype, however, GOG isn't to blame for this. I had no issues using their installer or anything, that was the only good experience I've had farting around with this thing.