I've been trying for the past 10 minutes to save a map that I'm creating, but no matter what I put, it says that the map name is invalid. What exactly do I need for map name and map display name? I've made a map before plenty fine, but I just have no idea what is wrong with naming this one. I've tried naming the display name like ExampleExample and Example.png and such, and with the display name it has been like Example Example and Example Example.png just to test out if the .png would work on it, but nothing seems to be working whatsoever. Help?