Garry mod Map graphic Problem?

Hi guys when i download a map and after play on it When i look Up in the sky All the graphic Will be Messed Up and I will see like in triple The thing i wanted to see. Excuse me for my bad english im canadian and I only have Half life 2 deathmatch team fortress 2 For Gmod (i buyed the pack Gmod+Team fortress2) Please help ! Im getting tired to Get bug With map

[editline]13th June 2011[/editline]

Please Reply !

What is the map you tried to play on?

Don’t you speak english in canada? :raise:

French.

Map probably require CS:S