.Map :: MoHAA Mapping

I dunno if i hit a button or something, but i opened up my map...and where i had lighted window textures...(IE from going to Texture>Light)
the windows are see thru just like making a breakable window! There used to be a lightted window, and if i try to reapply the lighted window texture it still shows up see thru. Any ideas?

Press the blue A on the top toolbar

thanks Jv....