My internet connection was down the other day and I was bummed I couldn't play my FTB infinity sp game because the FTB launcher basically won't even run without an internet connection. I think ideally there would be the ability to use the FTB launcher offline. But barring that, is it possible to simply copy the folders from a mod pack over to your default minecraft directory, without screwing up your vanilla install incase you wanted to load up some other non-FTB game / modpack or whatever?