I have cc'd the zope list in case others may find this answer helpful.
Hi,
i read your question (seems quite recent). I've had the same problem and traced the problem to some forgotten import time in pgPropSource.py in the exUserFolder folder.
If you add:
import time
below f.i. import cPickle
Thank you. This resolves the issue. Upon further investigation I have found that that a bug report has been filed at http://sourceforge.net/tracker/index.php?func=detail&aid=798772&group_id=363...
and remove the pgPropSource.pyc file after you've safed the change, restart Zope and hopefully it works than. Be careful not to test first in some remote deep folder before using it somewhere where being locked out can cause harm :-)
Hope this works.
Greetings Felix
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