Nevermind, thank you for your help @igazor and @BluebellFlora , but my game crashed (debugging problem, I've had it before), so I will de-install the game in a few days.
I'm not good at maths but I think that you've made a mistake here. Look: Your sim had 4 girlfriends. Then he broke up with one, that makes 3. After that, he got a new girlfriend so that makes 4, right? The goal is to be with 10 different sims at the same time. Hope I helped!
I had done that and it didn't work the first time but I think I've put it in the wrong place, so I'll move kt and check if it works in a few hours. My biggest problem isn't the package files at the moment, but the sims3pack files. Those really don't work, and I have no idea why. Do you or @igazor know how I can fix that…
Thank you both for replying. Sadly, neither of your suggestions have worked. I have searched for another TS3 folder by simply typing in the name, but the one in my Documents is the only one I can find. I'm not sure if the package files work, but I know for sure that the sims3packs still don't show up in game. I have…