people... people... these addons are NOT supported. If you can't follow the simple steps that he provided (which work perfectly if you read them and follow them in order) then you should just delete the files you added and play normally. If you don't know what you're doing, don't mess with game files and screw up your game, all you'll end up doing is making yourself have to reinstall.
My suggestion to you if your game isn't working properly is either remove any of the files that you added, or re-read the steps to installing the addons. Or, better yet, wait until the next patch and hope that the addon system is actually implemented into our version and then they will be supported.
Trust me, these addons will not effect your game in any way, if you're messing with the wrong files or putting things in the wrong folders, etc., THEN you'll get problems.