Ajax callback fails (but used to work)

[eluser]Ivoo[/eluser]
OK, this is weird. I have an jQuery ajax call-back to my CodeIgniter controller. A month ago, this worked fine. But now it stopped working. The problem is that the controller-function is not reached.

Also, it is not a routing problem. When I manually point my browser to the my callback function (repository/asm), it works fine.

I suspect that I unknowingly changed some configuration, or some setting. But what?

Any suggestions?

jQuery:

Code:

$.ajax({
   type: 'POST',
   url: "repository/asm",
   async: false,
   data: { mediaID: mediaID },
   success: function(jsonData){
    data = $.parseJSON(jsonData);
    $('#innerImageFrame img').attr("src",data.uri);
    $('#titleFrame').html(data.titleInArchive);
    $('#commentFrame').html(data.commentInArchive);
    $('#yearselect').val(data.yearselect);
    $('#monthselect').val(data.monthselect);
    $('#dayselect').val(data.dayselect);
    $('#starRating').raty('start', data.starRating);
   }
  });

CodeIgniter:

Code:

<?php // if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Repository extends CI_Controller {

public function __construct()
{
  
  parent::__construct();
  $this->load->helper('url');
  $this->load->model('ifm_media_model');
  // $this->load->model('news_model');
}


  public function asm()
  {
  log_message('debug', '*** asm (ajax callback) (repository.php) was called');

// .. other code, but the above message is already never logged