Admin Page not Working

I last used the Event Plugin about a month ago. Everything was fine. My pages are still working, but if I try edit them, or create a new one, the buttons for publishing or updating the event do not show on the admin page for the event.
All I see is the text area, clicking on the visual button does nothing.

Any suggestions on what is wrong.

The page I need help with: [log in to see the link]