As reported below about 2 months ago, AAM is broken for WordPress 3.6. Apparently the jQuery in the plugin has issues with 1.10.2 used in WP 3.6.
AAM is now inserting a height:0px on the inline styling of the accordion so you can't see the fields for the menu settings.
This is such a great plugin for preparing sites for a client. Can you please give us an update on when a fix will be made?