HeliControl - Failed to compile: 'BasePlayer' does not contain a definition for 'SendFullSnapshot' and no accessible extension method 'SendFullSnapshot' accepting a first argument of type 'BasePlayer' could be found (are you missing a using directive or an assembly reference?) | Line: 1917, Pos: 32

Try this at line 1914:

                    if (distFrom >= 50)
                    {
                        try { player.ClearEntityQueue(); } catch { }
                        player.SendNetworkUpdate();
                    }