Unreal Lighting Issue

I’m having an issue with the lighting in UE4.

I can’t seem to figure out why this is happening, and it’s becoming quite an issue when showing demos, or any other in-editor things.

The above picture is what the scene should look like.

This below picture is what i’m getting when I press “Play”

The lighting from these torches should be working fine. It works fine when you build, works find when you’re in editor, but when you press “Play” it seems to mess up. Any ideas on what I should do? I’ve built lighting, and looked for anything that would cause this, and came up empty handed.

Please help,



Hi Ryan -

From the pictures it looks like something in the scene is causing the lit area of the map to push to negative values. Have you used any post processing in the scene? If so, can you share everything you have added or changed in the Post Process. In addition it looks like you are using exponential fog in your level. Can you give me a run down of the various elements in the scene.

Thank You -

Eric Ketchum