Whenever I load map "Decontamination V2" I get a pop-up saying:

Server script compile error
Could not find script 'maps/ugx_modder_help'
#include maps\ugx_modder_help;

I downloaded the map off of the ugx map manager and bought cod WAW for zombies but nine times out of ten the maps don't work for me. If anyone knows a solution please help me out.

Check your appdata mods folder for any loose files. You shouldn't be getting the error if your just playing and not a modder or mapper making a map.
Make sure your game is updated.

Everything is fixed now thank you so much.