Hi !
Same problem since version 2.0.11 of NextGen Gallery. Here is the new fix :
function check_request( $wp ) {
if(strstr($_GET["callback"], "monoslideshow")){
require_once (dirname (__FILE__) . '/xml.php');
exit();
}
else return;
and always :
Line 55, replace :
add_action(‘parse_request’, array(&$this, ‘check_request’));
With :
add_action(‘parse_request’, array(&$this, ‘check_request’), 9);
}