Lighting error with update 4.6

Hey guys I upgraded my unreal from 4.5 to 4.6 the other day, but when I opened my scene in the new version the lighting was different and was not casting shadows. Does anyone know why ?

Before Update

After Update

Hey Tehrobster2 -

Try looking at your Engine Scalability settings under the Settings Icon and insure that they are set to EPIC level. It looks from your images that the engine has turned off all post processing information.

Let me know -

Eric Ketchum