Sinking pets is a pretty well-known bug in TS2 Pets that occurs when you have a mod conflict or corrupt or incompatible cc. If you didn't have this error BEFORE your brother put "some downloads" in the folder, and you DO have it NOW, what does that suggest to you that you should do?
Yeah, I figured I should probably delete them, but I just wanted to know if there was a way to identify WHAT mods are affecting it. I guess it's a process of elimination. Thanks.