How force recompile shaders?

Hi!

After I add some new objects in game scene UE begin compile shaders and stop on point 6%. It stay on it about 3-4 hours, so I close UE. Now Lights on some game scene is OFF, and… see picture:

How I can force UE finish compilation. " recompileshaders changed " work, but no changes on scene. I have project copy, and can rewind back, but I will lost 2-3 day of work…