error message when adding new event

I keep getting this when i try to add a new event:

Fatal error: Call to undefined function eme_upload_event_picture() in /home/simama76/public_html/wp-content/plugins/events-made-easy/eme_recurrence.php on line 121

what should I do?

Thanks!

http://174.132.156.2/~simama76/

http://wordpress.org/extend/plugins/events-made-easy/