Regarding a build of the Loader level

When I build a game which uses the loader level from the Networking Examples, I've noticed that when I click Start Server it doesn't do anthing, whereas when I click Start Server in the Unity Editor it has the server pop up at the bottom and you can then click on the server to open it and play the game.

I tried building the loader level that is *in* Networking Examples, and discovered that the level does the same thing in that build as well. Why does it do this? Is there something wrong?

{edit} Nevermind. Foolish error-when I went into fullscreen mode the button appeared as if from thin air. Sorry!