the GAE map editor actually, didn't even think to try the MG one. I'll do that, thanks
Hmm, interesting. While I was able to create a 512x512 map fine in the GAE map editor, creating a 1024x1024 map always crashed the editor for me, too. At any rate, the MegaGlest map editor works well and is more refined than the GAE map editor. No particular reason to use the GAE map editor, since the MegaGlest map editor does everything it can and more. Maps made with the MG map editor are compatible with all engines (although the MGM format only works on MG and GAE; while cliffs and the default camera height values will be ignored in GAE, with the map working, but it'd use walkable, very steep hills instead of cliffs and the regular camera height).