The Events Calendar: Custom Event Order in Admin

admin-order.php

<?php
/*-----------------------------------------------------------------------------------*/
/* Modify Event List Order in Admin
/*-----------------------------------------------------------------------------------*/
function set_custom_post_types_admin_order($wp_query) {
  if (is_admin()) {

    // Get the post type from the query
    $post_type = $wp_query->query['post_type'];
    if ( $post_type == 'tribe_events') {

      // 'orderby' value can be any column name
      $wp_query->set('orderby', 'start_date');

      // 'order' value can be ASC or DESC
      $wp_query->set('order', 'ASC');

    }
  }
}
add_filter('pre_get_posts', 'set_custom_post_types_admin_order');
?>

Close. Should be 'start-date' in line 13, not 'start_date.'

/-----------------------------------------------------------------------------------/
/* Modify Event List Order in Admin
/-----------------------------------------------------------------------------------/
function set_custom_post_types_admin_order($wp_query) {
if (is_admin()) {

// Get the post type from the query
$post_type = $wp_query->query['post_type'];
if ( $post_type == 'tribe_events') {

  // 'orderby' value can be any column name
  $wp_query->set('orderby', 'start-date');

  // 'order' value can be ASC or DESC
  $wp_query->set('order', 'asc');

}

}
}
add_filter('pre_get_posts', 'set_custom_post_types_admin_order');