I have been playing the Space Astronomy pack recently, but every so often it will freeze for me and a few times i have lost my whole save. I tried to back up my save by going to C:\Users\Name\Documents\Curse\Minecraft\Instances\Space Astronomy\saves. I was told this was where to back up your save files. So i copied it and when i went to use the back up nothing happened. I'm not the greatest tech wise so any help would be greatly appreciated.