Halo 4 Forge Light Generating Bug?

I don’t know if anyone encountered with this but if anyone knows a fix for this please tell me.

I have this problem in Forge in the map Erosion. I placed over 200 structure objects on the map and every time I go to monitor to player mode. It wont generate light then my map looks weird cause some are bright and some parts are dark. If I delete one object I can generate light. If I add one more structure, I can’t generate light. It looks like I hit the limit of something but I haven’t even used the full money budget.

I’m assuming this will happen to the rest of the maps.
I can’t finish my map until this is fixed. :[

I have a video in my fileshare if you don’t completely understand what I’m saying. It’s in the film & clips section. The only file.
GT: Templar648
Edit:
Omg. I meant to post this in the Halo 4 Forum. sigh -.-

I haven’t encountered this personally, as I’ve only done some light Forging, but I’ve heard it discussed elsewhere on this board and other sites. I’m 99% sure it’s a known issue.