It simply sets to zero few variables, so the game engine will always answer YES to every query.
This means that I am registered to have either too high or too low Karma for him. After completing the Raven Rock story mission, I tried to re-recruit Butch, but he claimed that I was 'too intense'. I was doing a run of TTW using Butch and Dogmeat as my companions after retrieving the GECK from Vault 87. It means you need to give water to a beggar or steal something etc. Fallout 3 Neutral Companion Recruitment Bug. That's for the Karma System TO update its values. To work - after intalled the mod - you will still need to do just one more good or bad action. For instance, to kill every good citizen from Vault 112 - escaping from it - is counted as 'Good Action' while to kill the bloodthirsty cannibals inside Meresti Station is counted as 'Bad Action'.
It Is good to remember the Karma System of the game is not only weird, but quite unreal. without worrying about karma but Talons and Regulators will still hunt you. That means you can recruit companions, enter Paradise Falls. This mod simply disables the Karma System.