Eastern Plaguelands Problem

Hi guys,

I have a problem...Everytime i want to go to Eastern Plagueland or get near it my game crashes
This application has encountered a critical error:

ERROR #134 (0x85100086) Fatal Condition
Program: D:\Wrath of the Lich King 3.3.5a\Wow.exe

Failed to read file World\Maps\Azeroth\Azeroth_39_28.adt.

Debug Details:

[2] err=0 text=SFileReadFile - World\Maps\Azeroth\Azeroth_39_28.adt - Data\patch.MPQ
[1] err=0 text=LoadSectorTable failed
[0] err=0 text=LoadSectorTable failed
Storm Error Msg:Reached the end of the file.

That's what it says.
Can you help me?

Best way to solve that problem would be to redownload the client but before that, check this guide.