External lightmaps working in editor but not in build.

I have rendered out lightmaps from Max.

The following is my setup in Unity:

With scripting I have added the lightmaps to the LightmapSettings.lightmaps array and set my static geometry renderers to the proper lightmap index. I have turned of unity GI and unchecked auto baked. Lightmap mode is set to non-directional.
With all these settings I can see the lightmaps working when I run the game in editor. When I build to PC target the lightmaps do not appear.

Am I missing a setting for my lightmaps to load in the build? Please help.

Using Unity 5.

Turns out this is a bug.

I followed the steps in the link and now the lightmaps are working in the build.