Khaos: Thottbot - /lang broken

[neoaeon]

/lang darn
/lang comm

[String "Interface\AddOns\Thottbot\Thottbot.lua"]:416: bad argument #1 to 'format' (string expected, got nil)

[Pleonast]

I get an error too, but the language does change (I have the command in a macro).

[towt]

same problem here... although the language does change. Just kinda annoying