I have updated my WordPress site from 3.6 to 3.9.1 twice now. Both times I have run into issues with the Admin menu not working. I have taken all of the normal steps of backing things up, resetting the theme to one of the defaults, disabling all plugins, as well as renaming the plugin's folder to pluginold and nothing has helped. I am starting a new thread as I have searched many existing ones and haven't found any answers. The site is http://ynp2.com
Please help! I am trying to get this going for a client who wants full access to addition or removal of all content.