How to change the size of ladder_up.map to fit my map?

I get some errors in my console when I try to compile my map. Any help?

File Handles:
----------------------
27018 files in iwd files
Loading map file D:\Steam\steamapps\common\Call of Duty World at War\map_source\MAPNAME.map
ERROR: in map: D:\Steam\steamapps\common\Ca...