This gamemode won't start on my server

I found out that someone fixed my favouite version of zombie survival that is currently broken for obvious reasons.

I tryed playing it in singleplayer and it worked perfectly no problems at all but when I put it on my server for some reason it would not start it just loads the sandbox gamemode.

Links: - Workshop - SVN

You did it wrong. You load the gamemode by putting “+gamemode name” to your command line parameters.

I do have that on there and also I got it to work by messing around it seems the person who made all the gamemode files in one folder called gamemode and all the other files in the zip are useless.