Level Design [ERROR] Brush draw failure

[StuKKa]

Hi there,
I'm still working on my map and got a failure drawing the interrior of the first trader. I'm not sure why this happens. I also put a AntiPortalActor behind this wall, but I could still see through the wall. It seems like the brushes (drawn substract) are causing this error, or only maybe causing it.
This is what happens when I look at the wall from the site:

And this is what it looks (without the error) looking directly on the wall:

The Bull's Eyes are static meshes. Anyone got an idea how I could handle this error? Or should I simply draw the windows dark so I could not see through them. This also happens Ingame, but was easier to take a screenshot in the editor without lightning.

 

[ro_sauce]

can u upload so we can see what your are doing?

 

[StuKKa]

Thats a little problematic, because it uses content of a mod I'm working on, so it would be about 500 to 800 MB ...
It is a big block (add), with another Block in it (substract). From outside the room it looks normal, but from inside, it happens what you could see in the first picture.

 

[StuKKa]

Ok, sorry, found the problem .... i accidently dropped a antiportal in the middle of the room and this was the result ..... damn .... why must this entity so small ....
now it works probably ... thanks for helping