[Zope] Parsing with sax

Hello, I had an application, on a computer with zope's installation for Windows, that uses xml and to parsing a file it uses the parseString() function. All the application on Windows run, but when I've put this application on the zope's installation for Linux, it give me this error: Error Type: AttributeError Error Value: 'xml.sax.expatreader' module has no attribute 'create_parser' Please, Is there someone that can help me?