Spooky ghost wall help ;_;

[ProselyteCanti]

I put in this window, on a wall. I carved the window into the wall. That part of the wall is replaced by the window. The wall doesn't show up in hammer. But it shows up as a hollow wall in-game. help pls ;_;

 

[The Asylum]

Try closing and reloading hammer

if that doesn't work, use the problem checker under the map menu

 

[takabuschik]

carved

Never carve things in hammer, that function is pretty much broken.

6. Carve: Woahwoahwoah, back away from this unless you're putting a rectangle solid through another. While usually this just splits solids around the brush you selected, sometimes this can mess up your map MAJORLY. Not recommended to use. Instead, use the vertex or clipping tool (both to be covered at a later)