Cant log into the new expanson - mists of pandaria

Hello i receantly downloaded the expansion of mists of pandaria and when i opend it for the first time it said.................... 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 ..... Please help me fix this problem

Happened to me and i tried to change wow folder's permission taking off the "Read-Only" option, it didn't work though. What fixed it for me was updating the Nvidia drivers with the latest update. Try both. Good luck.

Follow these steps:
1) Restart your PC
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".