The cause of this error is a corrupt relationship between Sims whose household can’t be loaded. It is recommended that you relaunch the game. When trying to load a certain household I get the following error message: The game failed to load.This error was fixed in Patch 1.58.69 Problem See Further Reading for similar Issues or check this post: Loading a family just reloads the map Update If you have different code, your issue is different from this one and might be mod related. Be aware that the error number you get is important in it’s whole length.