There seems to be a conflict with the plugin Event Manager.
when I try to create a new event from the website (not admin), I get this:
Fatal error: Call to undefined function wp_check_post_lock() in …/wp-content/plugins/buddypress-docs/includes/component.php on line 333
It seems that the plugin is trying to call a WP function that doesn’t exist.
Any idea how to solve it?