I seem to have a lightmap issue when the light builds, and it seems to only be based upon location. I have a series of halls that are connected. When I build lighting separate they work fine. When I connect them (No overlapping faces) they create very strange and unusual lighting patterns in the lightmaps. Has anyone heard of this before? They have no overlapping faces no lightmap layout issues but when I put the modular system is put together it seems to create very large black areas and incorrect lightmaps.
Thanks for any help.