这个错误是怎么回事？求解决办法【已答复】

悠闲的胖子

Message: [string "..."]:820: bad argument #1 to 'sub' (string expected, got nil)
Time: 06/18/13 14:20:58
Count: 50
Stack: (tail call): ?
[C]: ?
[C]: in function `sub'
[string "..."]:820: in function `amAOEClick'
Interface\AddOns\yjwow\wowamfunctions.lua:7042: in function `amruninspell'
[string "if IsLoad_runspell then..."]:722: in function `SpellsRun'
[string "--if (GetLocale() ~=  "zhCN") then return; ..."]:1911: in function <[string "--if (GetLocale() ~=  "zhCN") then return; ..."]:1885>
Locals: (*temporary) = 0.015000000596046
(*temporary) = <function> defined =[C]:-1

天平

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