AJAX_Marking v2.1.5b7 on Firefox 11.
This may be one problem or two different ones:
1) The marking window does not have a "Revert to draft"/"prevent new Submissions" button like the grading dialog does.
2) The list of response files does not load. The spinning circle icon runs until I close the window.
Error: YAHOO.util.Event is undefined
Source File: http://moodle.sstx.org/blocks/ajax_marking/actions/grading_popup.php?userid=1390&coursemoduleid=91&courseid=2&node=20&mode=single