Using: Zope Zope 2.3.2 ExUserFolder 0-8-0 CoreSessionTracking 0.9 I spent some time today downlaoding and playing around with exUserFolder and got it to auhenticate from Postgres just fine. Then I tired to play around also with CoreSessionTracking and found this problem. I have a secured folder, which requires authentication and in which I will try to move into. Authentication pops up and I write rigth username and password. Then should come the page, but usually comes error - from which the traceback is down below. That error also comes from time to time, if I reload page which is using core session tracking. Example page I used testing core session tracking: <dtml-with sessiondatamanager> <dtml-let a=getSessionData> Before change: <dtml-var a><br> <dtml-call "a.set('zopetime', ZopeTime())"> <dtml-comment> 'zopetime' will be set to a datetime object for the current session </dtml-comment> After change: <dtml-var a><br> </dtml-let> </dtml-with> <!-- Traceback (innermost last): File /usr/lib/python1.5/site-packages/ZPublisher/Publish.py, line 223, in publish_module File /usr/lib/python1.5/site-packages/ZPublisher/Publish.py, line 187, in publish File /usr/share/zope/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /usr/lib/python1.5/site-packages/ZPublisher/Publish.py, line 162, in publish File /usr/lib/python1.5/site-packages/ZPublisher/BaseRequest.py, line 446, in traverse File /var/zope/Products/exUserFolder/exUserFolder.py, line 834, in validate (Object: Traversable) File /var/zope/Products/exUserFolder/exUserFolder.py, line 755, in cookie_validate (Object: Traversable) File /var/zope/Products/exUserFolder/UserCache/UserCache.py, line 87, in getUser File /var/zope/Products/exUserFolder/exUserFolder.py, line 177, in notifyCacheRemoval AttributeError: 'None' object has no attribute 'flushTempProperties' --> Anyone else noticed this? -huima