When you go into the admin panel of your wordpress site and try to add a new link to the menu, after hitting "Add to Menu" it just sits there loading and nothing happens.
When I disable ALL plugins and try again it works but I wanted to pin point the plugin that was causing the issue....
SOLUTION:
I found that the plugin creating the error is:
Web Ninja Auto Tagging SystemThis plugin will automatically make tags with the tagthe.net and yahoo yql services when you save or update a post. Also has the option for re-tagging all post.
Disabling that plugin will allow you to start adding new items
