Lightmaps not showing after exiting unity without saving (Unity 5 free)

I left a bake to run overnight and I've just arrived at work now and windows decided to update/restart overnight. Looking at my project, all of the lightmaps seem to have finished baking before the restart, but obviously I didnt save the scene.

No lightmaps are displaying in my scene, and looking at the lightmap tab displays no lightmaps and specifies 0 b of lightmaps.

I have a lightmap snapshot file, but I'm not too sure what this is, I've had a little look around the docs. Applying it doesnt do anything.

Can anyone tell me how to get them back to avoid yet another bake? There seem to be a lot of problems I keep encountering with enlighten.

 

This is since Unity 3.5. You really need to save your project and scene before you quit. if you don't and just lightmapped everything, you're work is partly lost. On one side it's logical, since every change you do should be saved, but on the other side you should think the maps are there, so what's the problem?

Just always save

 

Yeah I always save - I didnt realise windows had auto update on as I never usually have to leave a bake overnight, at least I didnt with beast

Its annoying that my maps are there and I just cant use them. I just deleted them and started a new bake - ho hum.