Team play errors on Half-life

[johnc025]

Code:

mp_teamlist "barney;gina;gman;gordon;helmet;hgrunt;recon;robo;scientist;zombie"
mp_teamplay "1"

My mate wants to use teamplay but it crashes your client when you join the server. However if you disable mp_teamplay it doesn't crash. Is there something wrong with the code or is it a teamplay bug?

[Switch0r]

code would be :
mp_teamlist <teamname/modelname;teamname/modelname>
like this:
mp_teamlist "The Gordons/gordon;The Zombies/zombie"