Wow error 134

This application has encountered a critical error:

ERROR #134 (0x85100086) Fatal Condition
Program:D:\World of Warcraft\Wow.exe

Failed to read file signaturefile.

Debug Details:

[3] err=0 text=SFileReadFile - signaturefile - Data/wow-update-13623.MPQ
[2] err=131 text=System_Mopaq::delta_open - error and close
[1] err=1006 text=System_Mopaq::DeltaData::OpenSrcFile - fail to open
[0] err=2 text=SFileOpenFileEx - signaturefile
Storm Error Msg:Не удается найти указанный файл.