The problem is not related to addons, since they are being loaded into the game after you selected your character already (to be more precise, when you're at 92% on the loading screen).
I don't know exactly what the problem might be in your case. What launcher are you using: The my.com one or the old launcher? If the old launcher, try launching it with Admin rights.
Disable your antivirus for a bit and try running the game, see if that helps. Similarly, disable your firewall for a bit and see if that helps.