He was doing the fastvis compile, that came up with the error
************ ERROR ************
Leaf with too many portals
When i did a final compile, there was no error, but his lights were still jacked up.
So i copy'd the map, brought it to a new fresh grid, pasted it, and then did the final compile and everything lit fine.
From what i saw, it looks like he messed with the arghad settings, possibly unknowingly, but the lights were lighting only themselves before. When i finished the compile, everything looked like a normal map, and i must say it should be a fun pub style map