WowAce

ZThis error happerns, when you start a bid and you have activatd "Don't show unuseble Items"

2009/04/25 18:39:23-524-x2]: MagicDKP_Client-1.0.57\MagicDKP_Client.lua:429: invalid capture index
MagicDKP_Client-1.0.57\MagicDKP_Client.lua:429: in function `IsItemUsable'
MagicDKP_Client-1.0.57\MagicDKP_Client.lua:254: in function `?'
MagicComm-1.0.61\MagicComm\MagicComm.lua:220: in function `Broadcast'
MagicComm-1.0.61\MagicComm\MagicComm.lua:142: in function `?'
CallbackHandler-1.0-3 (Ace3):146: in function <...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:146>
<string>:"safecall Dispatcher[4]":4: in function <[string "safecall Dispatcher[4]"]:4>
<in C code>: ?
<string>:"safecall Dispatcher[4]":13: in function `?'
CallbackHandler-1.0-3 (Ace3):91: in function `Fire'
AceComm-3.0-5 (Ace3):247: in function <Interface\AddOns\Ace3\AceComm-3.0\AceComm-3.0.lua:236>

You know, you could just update your Client. You're using r57 when r60 is available (even r61 but only on ace).