calendar acception and update participants status bug
if there is an attachment in an event AND the event is accepted by another user, AND the orginiser UPDATE THE STATUS OF THE participant,
the atteched file is cloned and there are 2 times files in the attachment section of the event.
the log says;
PHP Warning: file_get_contents(): Filename cannot be empty in /var/www/roundcube/plugins/calendar/drivers/database/database_driver.php on line 1257