Your editor is getting better and better! What I'd like to see is a menu on the right side where you can pick items that you want to place on the map. So you can spare the buttons on the bottom. And of couse some terrain editing tools!

I like the "Test" function a lot and that the editor runs stable!

One bug: CTRL+ALT+END does not close the editor, nor does ALT+F4.

Keep developing, this one is getting good!