skharmon

hey cecilaki_LG
not sure if you ever figure this out, but Jonas Grumby posted the solution below:

add_filter('pre_get_posts', 'query_post_type');
function query_post_type($query) {
  if(is_category() || is_tag() || is_home() && empty( $query->query_vars['suppress_filters'] ) ) {
    $post_type = get_query_var('post_type');
	if($post_type)
	    $post_type = $post_type;
	else
	    $post_type = array('post','tribe_events','attachment');
    $query->set('post_type',$post_type);
	return $query;
    }
}

you can see full discussion here