FCKeditor with symfony

I would like to use FCKeditor with my project written in the Symfony framework (http://www.symfony-project.com/), but have got no success. As i have understood the problem is in URL routing that Symfony uses (very similar to one that is used in Ruby-on-Rails) when FCKeditor tries to load its body to an <iframe>. Have one ever tried to integrate FCKeditor with Symfony? Or maybe one knows what is going wrong?