I can´t open WoW.exe

yesterday I played but today I try enter to the game and I can´t. I don´t know why.


Appears a message of "WowError"

and...

This application has encountered a critical error:

ERROR #121 (0x85100079) Version Mismatch
Program: C:/Users/APACHE PRO/Desktop/GAMES/WoW/World of Warcraft/Wow.exe

Unable to open DBFilesClient/Startup:Strings.dbc

Press Ok to terminate this application.

Help me please

download it again, and then:
1) close your Torrent client and move your WoW folder away from your Torrent's download destination
2) now right click on WoW folder> Properties> remove "read-only"