I've just been trying to create a door with glass in my map, and when I check my map for errors, I get this:
"Solid entity (func_wall) is empty. This solid-entity contains no solids. Fixing the error deletes the entity."
So I click go-to error, and the views change as if it's showing me where it is (as usual) but nothing is highlighted. I tried using the "fix" button (it said the entity would be deleted) but nothing got removed. I got rid of my door with glass, and the map was just how it was before I started, and i still get the error. What's it all about?