I run a standard, vanilla game. Not the Developers game, and without any mods.
The game runs okay, and most things run as I expect, but when I run the editor, it runs the Development version.
I can place a unit and then preview it, but when I exit back to the editor, it changes to the wrong version (the Developers version).
At that time, I'm unable to type anything into the various fields and I can't use the map. I'm forced to save the map and reload it to be able to type into the init (or whichever) field.
I can even run the game in multiplayer mode, but no one can see the map. I'm also unable to change the firing mode of my weapon. {F24770}