So yeah, terrain won't show up. I go to View -> Show/Hide Window, and terrain check box is empty. So, I check it and close it, reload and it still won't show the terrain. I went to Show/Hide window and it unchecked itself for some reason. So what's up?

EDIT: actually, as I change cells it seems the options in Show/Hide Window check and uncheck themselves on their own. I can't change them anymore. Very odd. What on earth did I do? XD