[Plugin: WP Calendar] Can't create any events

whenever i try to create an event, i get this error:

INSERT INTO wp_fsevents (subject, tsfrom, tsto, allday, description, location, author, createdate, state, postid, updatedbypost) VALUES (‘school starts’, 1315353600, 1315353600, 1, ‘welcome’, ‘laguna’, 1, 1315370862, ‘draft’, NULL, 0)
DB Error

any suggestions?

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