[Zope] Problem with importing (PerlMethod)

Hi, I want to transfer a Zope object by exporting it on the one Zopeserver and import it on another. Exporting worked fine but when I copied the resulting .zexp-File to the import-directory of the other Zopeinstallation and tried to import it I got the following error: Error Type: ImportError Error Value: No module named PerlMethod Any idea? Bye, Chris