Hello, I have just downloaded Mop and I have tried everything of what you guys said, nothing worked, can't log in into my acc ,says only connecting and nothing happens. I think you should check your files better because people may actually want to try MoP, at least for fun.
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"