.Map :: MoHAA Mapping

When I open a new window and go to pointfile its has a red line saying that I have a leak or when I create a building with brushes that don't over lap still getting the same thing

I have tried all day to figure out what the problem is and I am getting nowhere.

Totally frustrated now as I can no longer work it out

Please help as you can I am getting cheesed off now.

I believe this "leak" is light that isn't inside the map.
It's like you're lighting lighting under the floor.
There's light slipping away into the darkness beyond the map...

omg, I hope you understand this, my english is not allways that bright..

u made a map?
u compiled it?
u reopened the map in radiant?
loaded the pointfile?
got a red line?

is it this way?