I solved that deleting
// Preflight checks
if (!class_exists(‘TribeWooTickets’)) return;
if (!class_exists(‘TribeEvents’) || -1 === version_compare(TribeEvents::VERSION, ‘3.1’)) return;
if (!class_exists(‘WooCommerce’) || -1 === version_compare($woocommerce->version, ‘2.0.13’)) return;
but i need to show event name and date in the administrator mail!!! please help!