Ah, yes, the joys of exporting terrains--- I've had a few little misadventures of my own with that one. It hardly matters anyway; even if hadn't x-ed out of the export dialog, Vue probably would have crashed when you hit OK..... for some reason Vue wants to crash when exporting terrains with the material "faked" to a .bmp. I found a way around it, which is in another thread here somewhere, but I can't remember what it was.