Nostalrius Begins - Quality wow vanilla realm (1.12)

I can't log in on any of my characters on pvp realm. The game normally loads, but after if finishes, the game freezes. The music still keep playing but nothing more happens. I can't close the game, can't minimize and the game doesn't start. I have to close it from windows.
I can create new characters but can't log on my existing ones. Please help.

An addon was blocking the game. Took them all out, now im installing one by one. Thanks for the help =)