I just made this account in order to report some problems I've been having. I've actually encountered the problems that 1Monstar seems to be running into quite a few times, as I've been playing the modpack on a single player world fairly often. Certain things seem to randomly crash the game that don't seem to have conflicts most of the time. For example: turning on a beacon, upgrading a tool in tinkers' construct, injecting dna from advanced genetics, and turning on a pipe are all causes for crashes that I have run into that don't usually crash the game. I don't think it's a problem with any of those specific mods, but I honestly have no idea what could be happening. Another more drastic problem that seems to be occuring fairly frequently is that every once in a while, a crash will delete the "level.dat_old", which seems to be player data. It can easily be replaced with a back up, but it becomes a pain to have to do that every hour or two.