Modselector

so i have mods but i dont know how the maps need to look like because right now it crashes when i start a mod...
I have this maps: mod -> Modlist -> Dog War (for example) -> maps -> mp -> gametypes -> _rank.gsc

What is wrong? because when i start a mod, the game crashes!

Somebody help pleasseee ><

What do you mean? You press Start Modloader and then open Black Ops...

Yes black ops opens fine, then i go to private match, it is injected, and when i start the match the map loads, but at the end of loading the map: error message comes up:
Black ops doesnt work anymore.
When i not inject i can play so the game is fine.
conclusion: The game crashes when i start a mod!