@bluzkat65 - The Resource.cfg file that was being discussed here is part of what is needed to run mods and other kinds of package file based content in TS3. The game does not come with a Mods folder, the player needs to add in the Framework (three folders nested correctly plus the required Resource.cfg file in the correct place). Repairing the game and generating a new TS3 user game folder aren't going to do this, actually the latter would undo it all since the newly spawned game folder would not be accounting for mods.
This page has not changed. The downloadable Framework from here contains everything you need, the procedure is to download it someplace else, unzip, and place the Mods folder with its contents into your TS3 user game folder in Documents.
https://modthesims.info/wiki.php?title=Game_Help:Installing_Sims_3_Package_Files/Setup_and_Files
If you really want a standalone Resource.cfg file, we still offer one at NRaas but it's just that we've moved to our new site since this thread was active years ago.
https://www.nraas.net/community/How-To-Install#Blunote00s-Check-List
(see Step 3)