You need the client-side pk3 to be in the appropriate location.
What is a "client-side pk3" ?
I'm sorry, but I'm a noob on things like that.
I only know, how to make admin commands (make config files, write in the admin.dat, etc.) and how to use them. And I know some console commands.
I have one more question: Which base folder is mentioned here? The base folder in the user's folder, or the base folder, which is in the tremulous installation folder?