@Kayla: Have you exported a map? If so, Do you keep all the myplants, myrocks ect. in your exports folder? You need to make sure that when you sort objects and save you need to save them into your own folders. for example, I call mine GLPlants and GLTrees ect. You need to keep the old ones but when you get new ones you put the items in your own groups. Also, if you do have copies of those files in exports, you can delete them as you already have them. Try doing that first and see if it works for you.