Comment 7 for bug 342217

i was able to pin down the error to this:
layout.class.php

        function RenderDesigner()
        {
                $db =& $this->db;

                //Assume we have the xml in memory already
                echo "bla1";

                //load the XML into a SimpleXML OBJECT
                $xml = simplexml_load_string($this->xml);
                echo "bla2";

bla2 is not reached, so "simplexml_load_string($this->xml);" fails