[Plugin: Events] Undefined Actions

I got this messages when I want to make an event:

Notice: Undefined index: action in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 78

Notice: Undefined index: action in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 320 Notice: Undefined index: edit_event in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 321 Notice: Undefined index: duplicate in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 324
Notice: Undefined variable: event_edit_id in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 329
Add event
Notice: Undefined variable: event_edit_id in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 351
Notice: Undefined variable: event_edit_id in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 359

Notice: Undefined variable: edit_event in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 374Notice: Trying to get property of non-object in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 374

Notice: Undefined variable: event_edit_id in /var/www/wordpress/wp-content/plugins/wp-events/wp-events.php on line 618

And a lot of more problems

http://wordpress.org/extend/plugins/wp-events/