[Plugin: All-in-One Event Calendar] all in one conflict

I am getting this error when installing all in one calendar with wood booker plugin.

Fatal error: Uncaught exception ‘Ai1ec_Event_Not_Found’ with message ‘Event with ID ’215′ could not be retrieved from the database.’ in /home/falconl2/public_html/new_website/wp-content/plugins/all-in-one-event-calendar/app/model/class-ai1ec-event.php:347 Stack trace: #0 /home/falconl2/public_html/new_website/wp-content/plugins/all-in-one-event-calendar/app/helper/class-ai1ec-events-helper.php(63): Ai1ec_Event->__construct(215, false) #1 /home/falconl2/public_html/new_website/wp-content/plugins/all-in-one-event-calendar/app/controller/class-ai1ec-events-controller.php(482): Ai1ec_Events_Helper::get_event(215) #2 /home/falconl2/public_html/new_website/wp-includes/plugin.php(170): Ai1ec_Events_Controller->event_content(‘test?<di…’) #3 /home/falconl2/public_html/new_website/wp-content/plugins/wordbooker/wordbooker.php(1203): apply_filters() #4 /home/falconl2/public_html/new_website/wp-content/plugins/wordbooker/wordbooker.php(2292): wordbooker_fbclient_publishaction() #5 /home/falconl2/public_html/new_website/wp-con in /home/falconl2/public_html/new_website/wp-content/plugins/all-in-one-event-calendar/app/model/class-ai1ec-event.php on line 347

http://wordpress.org/extend/plugins/all-in-one-event-calendar/