[Zope] Export/Import problem (...object broken doesn't...)

Hi! I am a beginner in this Zope world. I am having a problem and I could't find the solution searching the MLs archives. I have exported a folder from my company Zope environment and I am trying to import it to my home one, but all I get is: The object broken doesn't support this operation The error stack ends with: path/CopySupport.py line 373 in _verifyObjectPaste Copy Error: (see above) Each time that I import/export from/to the same machine I don't experiment any problem, so I don't understand why my home Zope thinks that the company zexp contains broke object(s). Does anybody have a clue on what is going on? Thanks! Sara