Scoreboard error message during start up config.lua:155: attempt to call method 'lower' (a nil value)

[IBHalliwell]

Hello,

I'm getting an error message when Scoreboard loads. The console log reads as:

08:12:24 > \cs(255,255,255)DrawDistance\cr: Set Mob to: 50.000000
08:12:24 > \cs(255,255,255)DrawDistance\cr: Set Map to: 50.000000
08:12:25 > Toggle Lighting = F11 (Bump mapping must be off to work properly)
08:12:25 > Toggle FPS = F12
08:12:25 > DrawDistance Lv 50: Alt-F10
08:12:25 > DrawDistance Lv 5: Ctrl-F10
08:12:25 > Paste Clipboard = Ctrl-V
08:13:04 > Scoreboard: Lua error (runtime) - ...rogram Files (x86)/Windower4//addons/libs/config.lua:155: attempt to call method 'lower' (a nil value)
08:13:08 > \cs(255,255,255)DrawDistance\cr: Set Map to: 50.000000
08:13:08 > \cs(255,255,255)DrawDistance\cr: Set Mob to: 50.000000
08:14:01 > Scoreboard: Lua error (runtime) - ...rogram Files (x86)/Windower4//addons/libs/config.lua:155: attempt to call method 'lower' (a nil value)