I'm not be able to edit k2 articles from frontend because "close" button or "save" buttons doesn't work. When I logged in, I can edit article but I can't save article or close edit article's popup window. Disabling Admin Tools plugin works fine.
A url for edit article is:
http://netamin.es/index.php?option=com_k2&view=item&task=edit&cid=114&tmpl=component&Itemid=197
thanks,
David N.