Addons Seemingly Vanished?

Today I installed the Combine Mech entity which someone posted in the LUA section. I boot the game and all of my addons, sweps, maps, everything have just vanished and I’m left with a folder called “toybox”. oh and the mech folder which I then put in there vanished also. Whats that all about =’(

Are you sure its an upload by the creator. Not a re-upload or a mockery?
Anyways just delete the “toybox” folder and try it out!