Re: I've accidently deleted my GraphicsRule.sgr file!
@amongkylee Just because it has the Notepad icon doesn't mean the file is broken. The icon simply tells you what Microsoft has set as the default app to open .sgr files, as in, what it would use if you double-clicked. If this is your only issue and the game runs fine, there's nothing you need to do.
If the game doesn't work, just delete the file and then repair: open your Origin game library, right-click on the Sims 4 icon, and select Repair. This will put a new, unaltered copy of graphicsrules.sgr where it belongs.