I've noticed an error in line 492 (Revision 1.14) of xpath.class.php.
It says:
// Get the relevant object as a string and write it to file
$xmlString = exportAsXml($absoluteXPath);
It should be:
$xmlString = $this->exportAsXml($absoluteXPath);
Greetings,
Ir. Sacha Telgenhof Oude Koehorst
Kalshoven Automation B.V.
Research & Development
eMail : [EMAIL PROTECTED]