Issue with MOP client

So i doownloaded MOP on website link yesterday. When i try to open i have this error:

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


Im using administrator mode already. I tried compatiblity mode with windows 7, the same as i do to play Cata and didnt worked too. Some idea? Thx

http://i.imgur.com/5wWKUL6.gif

I had the exact same thing and the solution above worked.
S.

Thx worked.

Now i have another issue.


Cant call my hunter pets. I can see them on the skill icon and their names. Tried to put them on stables and says "internal pet error". Tried to move them betwen my pet slots and says the sam thing. Some idea? thx.

Its becouse they are exotic pets. U need to be a bm to move them