I was working on my CTF the other day in a single player game, and I created a manhole cover brick (from JVS doors pack 2) and I changed the events around so it would open when the player touched it and not when they clicked on it. It worked perfectly fine, but every time I used it I got an error in the console that said "function should not be used in LAN game" (it said a bunch of other stuff to, but this is what it said at the end).
This isn't really a problem seeing how the manhole still works just fine, but I would like to know why this showing up in my console.