[Help] WoW.mfil

tolong bantu dong kakak2 yang baik hati,

awak udah ngikutin langkah instalasi http://forum.indogamers.com/showthread.php?t=604371
nah waktu ngejalanin wow.exe pertamanya sempet ada donlot patch gitu (meskipun di tengah2 error)
abis ntu ngga ada apa2 lagi selain error:

This application has encountered a critical error:

ERROR #134 (0X85100086) Fatal condition!

Program: E:\World of Warcraft - Cataclysm\Wow.exe
ProcessID: 3192

Failed to open required archive Data\enGB\speech-enGB.MPQ with
error : 5

Streaming Status: Data Rdy

Wow.mfil download error: Failed to create file "WoW.mfil"
Manifest is valid.

Gimana ni kakak solusinya?