Build Unreal Lightmass WITHOUT Source

Hi,

I have a (binary install of UE) project that does not build lighting. I cannot compile the Unreal Lightmass since it never shows up in my project’s SLN. I am also unable to rename the meshes in my scene as there are too many (probably with the same name) to go through.

What am I supposed to do in this situation? We are nearing the end of the project’s development and this is critical.