Okay been messing around with my maps for a while and all of a sudden i noted light mass stopped working. I could create a new level from scratch put in a staticmesh light enable emissive and nothing. Or use a existing map which worked modify lighting in some fashion and rebuild still nothing. Even reinstalled the software twice with no luck.

Weird i could open previously saved maps which had full lightning builds on them and they showed light.

My solution was to go to run on windows type %temp% then delete everything in there. Then reinstall the software. Seems to work now. This should be documented for others not sure how temporary windows files ceased my lightmass from working. Perhaps someone from epic would know why?