The application I wrote is just for exploring ZF and therefore very simple. The URL is testapp/cms/home. cmsController with homeAction renders index.phtml ($this->render('index')) in views/scripts/cms. index.phtml is rendering as expected but when a pop-up opens from the toolbar I get that error in the pop-up window.

So Xinha is requesting a URL which is intercepted by the Zend router. I can't imagine that this is a real problem with Zend but I don't know where to look to solve this.