Need a little help

OK Its been a long time since I have had a major error with WC
and this seems major
When I make my map and compile it
Half the map is not compiled
WC view


The when I compile it doesn't come out like I want it -.-



I know it compiles some what because that light at the stair case
I changed its apperance but after the stairs it doesn't compile that part of the map

Any help would be appriciated

EDIT: Same thing happens in Kurok

dont put null textures in ur first compiles, u need to put NULL on FINAL compile ^^