The FireBug error is:
TypeError: tinymce.onAddEditor is undefined
/wp-admin/load-scripts.php?c=1&load[]=admin-bar,hoverIntent,common,schedule,wp-ajax-response,autosave,suggest,jquery-color,wp-lists,jquery-ui-core,jquery-ui-widget,jq&load[]=uery-ui-mouse,jquery-ui-sortable,postbox,post,thickbox,underscore,shortcode,backbone,media-models,wp-plupload,media-views,media-&load[]=editor,jquery-ui-position,wp-pointer,editor&ver=3.5
Line 67
Based on old tickets, there were issues with Google XML Sitemaps. I don’t have this installed just so you know.