Need help on MOP

I downloaded the Mists of Pandaria client (not minimal) but when i try to start, nothing happens for a few minutes, then an error message pops up


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


How can i solve this without downloading the client again? Thank you.

same problem here kandazsami61

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"