Lightmapping problem

I build a simple scene with gameobjects with Toon/lighted outline shader. I baked the scene, the maps turned out to be ok, but it just won't show when the built in lighting is turned on. it only shows when built in lighting is turned off. player camera's rendering path: deferred lighting. any idea how to fix it? is something wrong with my lightmap settings? it worked for me 2 days ago.