Setting the lightmapping settings to use a certain lightmap and the renderers to use the lightmapping data has no effect outside the editor.

To reproduce:
1. Open attached repro.zip
2. Open scene "MainScene". After 2 seconds in play mode it takes a prebaked lightmap from the resources folder and sets the lightmapping settings to use it. Then it also sets the lightmapping index of the renderers so the lightmap is used
3. Enter play mode in the editor - notice that the lightmap data is loaded up and used by the renderers (not correctly, but it's okay)
4. Build & run for windows standalone
5. Notice that nothing changes after setting up the lightmapping settings