Hi! I'm using the session manager for a simple home built e-commerce system with some code borrowed from the Zope examples. I don't know where to start searching for... specially because I am not able to determine which parameters/states produce this error. I understand that maybe my old session key is still alive in the server. I could clean it up, but it isn't a good solution for regular users. ;-) Any hint would be appreciated. Thanks a lot, once again! Gari Here is the traceback: ... File Script (Python), line 1, in itemNumber File /home/csmant/zope/2.5.1/lib/python/AccessControl/ZopeGuards.py, line 47, in guarded_getattr File /home/csmant/zope/2.5.1/lib/python/ZPublisher/HTTPRequest.py, line 851, in __getattr__ File /home/csmant/zope/2.5.1/lib/python/ZPublisher/HTTPRequest.py, line 837, in get File /home/csmant/zope/2.5.1/lib/python/Products/Sessions/SessionDataManager.py, line 92, in getSessionData (Object: session_data_manager) File /home/csmant/zope/2.5.1/lib/python/Products/Sessions/SessionDataManager.py, line 175, in _getSessionDataObject (Object: session_data_manager) File /home/csmant/zope/2.5.1/lib/python/Products/Transience/Transience.py, line 133, in new_or_existing (Object: session_data) File /home/csmant/zope/2.5.1/lib/python/Products/Transience/Transience.py, line 159, in new (Object: session_data) KeyError: duplicate key 55677973A0ffDLw6-UQ _________________________________________ Garikoitz Araolaza gari@eibar.org