I have a big problem with my gmod pls help!

When ever I try to join a server it says that the server uses different class tables, my friends say its an update that i missed but i need to know how to install it or whats Really wrong with gmod pls help

Garrysmod is broken. Garry Is a retard.

Thats what I figured.

You need to wait for the servers to update themselves.

noforgivin, your the minority.