Feral Heart

Hey everybody. I'm new and there are a couple things about map maker I can't figure out on my own. The first is, why aren't all the objects that are in the folders appearing in map maker? In the C:/FeralHearts/media/objects folder, there are a bunch of folders with various objects, but all of these don't show up in the game. Only like four for each category of .objects files. For example, in the grass folder, there is long grass and shrooms, but these aren't anywhere in my game. And in the misc folder, there is a waterfall, but I don't have any option for that in my game either.
The second thing I'm not sure of is how do I save my maps? Once I save them in game I can't find a file for it in my computer, and since I had to uninstall and reinstall, the map that I made has to be done over. Thanks in advance for anyone who helps.