Transparent Folders are used very often at iuveno. And we would like to do so in the future because they really provide an easy way to structure objects in folders. But with Zope 2.3.3 we get errors like that when we start an instance that uses Transparent Folders: Traceback (innermost last): File /home/customers/Zope-2.3.3-linux2-x86/z2.py, line 566, in ? File <string>, line 1, in ? File /home/customers/Zope-2.3.3-linux2-x86/lib/python/Zope/__init__.py, line 95, in ? File /home/customers/Zope-2.3.3-linux2-x86/lib/python/OFS/Application.py, line 91, in ? File /home/customers/Zope-2.3.3-linux2-x86/lib/python/OFS/Folder.py, line 94, in ? File /home/customers/Zope-2.3.3-linux2-x86/lib/python/OFS/SimpleItem.py, line 96, in ? File /home/customers/Zope-2.3.3-linux2-x86/lib/python/AccessControl/Role.py, line 105, in ? AttributeError: RoleManager The system is Linux (SuSE 7.0) with a binary Zope distribution. Any hints? Joachim