[Plugin: WordPress Navigation List Plugin NAVT] NavT broke when I moved WP

I moved a WP install from a subdirectory to the top of a webroot and now I can’t edit any of the nav groups I created. I can see them on the public side and admin side but the admin interface doesn’t respond to anything. I can’t create a new group nor edit the old ones! Help!

http://wordpress.org/extend/plugins/wordpress-navigation-list-plugin-navt/