shadows are not working

Hello everyone, I have a problem, I've updated to unity 5.2.2 (MAC OS) and now the lights that are using a shadow type are totally switched off, the lights into the scene preview are working, but when I am inside the play mode the lights are off, I don't know what happened

 

Are you using Occlusion Culling? There is a bug with that right now causing exactly the issue you describe. Clearing the baked Occlusion Data will restore your shadow rendering light until Unity fixes it. See also http://forum.unity3d.com/threads/unity-5-2-1p2-realtime-lights-not-working-occlusion-problem.358661/

 

thank you so much!!!, that resolved my problem!