Shaders used in angry bots lose their baked lighting data on builds.

To reproduce:
1. Import 5.0-AngryBots.rar
2. Change the Directional Light in scene to be 'Baked'
3. Bake the angrybots scene - the ground should become dark
4. Build for Standalone or WP8 or Android
5. Notice that the ground got bright on the editor and the build

You need to force a rebake in order for everything to look normal again, but a build will again, cause the baked data to disappear.
Angry Bots look fine on 4.6

If the baking mode is non-directional the issue does not occur.