Simple Allow Only One Instance of Client

[Tutorial Bot]

Author: Jourdan
Difficulty: 1/5
See also: http://www.key2heaven.net/ms/forums/viewtopic.php?t=70

:: CLIENT SIDE ::
In Sub Main, add:

Code:

If App.PrevInstance = True Then
        Call MsgBox("Only one instance of the game can be running.", vbOKOnly, GAME_NAME)
        End
    End If

That's all!