Running a Gamemode?

http://sassilization.com/forums/index.php?a=topic&t=2346

I downloaded this to test my map, dropped it into my addons and it is not is my game mode list in game
How do i use it?

I need to log in to view the forum.

You need to place it in the /gamemodes/ folder, not the addons folder for it to work serverside.

Nothing…

Its not on the list, So i typed in “Sass_Test” Witch is what the game mode folder is called and i got sandbox with errors

Its an alpha test, expect errors or none working environments.