Problems with opening the application

I have a problem with opening the app as you could already deduct from the title of this topic. Some seconds after i attempt to open it, it says this: Data/enGB/wow-update-enGB-18273.MPQ: World of Warcraft can’t make a required change to an archive file. Be sure you have write permission for the World of Warcraft folder or try running the game in administrator mode. For more information, see: https://battle.net/support/article/6910.

Id highly appreciate any help.
Thanks.

Follow these steps:
1) Restart your PC ( this is really important)
2) close your Torrent client and move your WoW folder away from your Torrent's download destination
3) now right click on WoW folder> Properties> remove "read-only".