Update: Still unable to reinstall the packs - Lovestruck, High school years, Island living, Realm of magic, Vampires. I've talked to xbox support and they ran me through a few things that I could do. I even reset my console and I still get the same error. They told me to just report it as there wasn't really any other solution. From hearing and seeing other people's experiences that (whilst not entirely the same) are similar, I think it's fair to say that the newest updates are the cause for such problems.