Map Editor Glitch

[Stuka44]

Having trouble with map editor. Looking for help. Mad editor was working fine. Recently went to create initial map, where you set size, and other things, like hill, embankments, roads etc. with the slide bars. For some reason now when I click edit map, a blue box comes up for Region select. After I click ok, it goes to the initial map editor screen but there are green blocks blocking everything. Like over the size of the map, there are boxes. It appears as though I can actually change it, but you can't see what the numbers are., and a small part of the sliders are blocked by the green boxes. It seems as though some graphic or something isn't clearing all the way. From here you can click edit existing map and all seems fine.