Client command not being sent by server?

Ok, this one is driving me nuts. In fps/server/srcipts/game.cs, there is the following code plus a debug statement:

function startGame()
{
   echo("SERVER GAME START");
   if ($Game::Running) {
      error("startGame: End the game first!");
      return;
   }

   // Inform the client we're starting up
   for( %clientIndex = 0; %clientIndex < ClientGroup.getCount(); %clientIndex++ ) {
      %cl = ClientGroup.getObject( %clientIndex );
      commandToClient(%cl, 'GameStart');

      // Other client specific setup..
      %cl.score = 0;
   }

And in fps/client/scripts/game.cs there is the following code, plus debug statement:

function clientCmdGameStart(%seq)
{
   echo("CLIENT GAME START");
   PlayerListGui.zeroScores();
}

What's confusing me is that "SERVER GAME START" is displayed, but "CLIENT GAME START" is not. So my deduction from this is that the client doesn't receive this message. What's even more confusing is that this is original Torque code, it isn't something I've added.

Could someone check their game and confirm it works for them?

Thanks a lot!