[Zope] AttributeError: _v_blocks

[Mike Murphy]

Hi!  I am having a problem with Zope after upgrading to v2.4.0, and I am not
exactly sure when it started to crop up...  but I am getting AttributeError
exceptions whenever I attempt to Add or View any of the following objects:

Accelerated HTTP Cache Manager
External Method
Mail Host
RAM Cache Manager
Script (Python)
Site Access Rule
SiteRoot
Virtual Host Monster
Vocabulary
Z SQL Method
Z Catalog
Zope Tutorial

Other objects add/view/manage just fine.  For each of these AttributeError
exceptions, I get a similar stack trace where it choked in line 241 in
python/App/special_dtml.py (see below).

Does this error look obvious to anybody?  For what it is worth, I may not
have upgraded correctly.  I know I have fiddled with permission settings
after running ./install  (docs recommend not to launch as root, but I run it
on port 80); and I also just copied the Data.fs* files from my prior
Zope-2.3 tree into my Zope-2.4 tree... without running any type of converter
utility on it.  Finally, I installed the ZPT products (Page Templates,
ZTUtils, TAL) latest version I think.

Any ideas?

Mike
Error Type: AttributeError
Error Value: _v_blocks

Traceback (innermost last):
  File /opt/Zope-2.4.0-linux2-x86/lib/python/ZPublisher/Publish.py, line
223, in publish_module
  File /opt/Zope-2.4.0-linux2-x86/lib/python/ZPublisher/Publish.py, line
187, in publish
  File /opt/Zope-2.4.0-linux2-x86/lib/python/Zope/__init__.py, line 226, in
zpublisher_exception_hook
  File /opt/Zope-2.4.0-linux2-x86/lib/python/ZPublisher/Publish.py, line
171, in publish
  File /opt/Zope-2.4.0-linux2-x86/lib/python/ZPublisher/mapply.py, line 160,
in mapply
    (Object: pyScriptAdd)
  File /opt/Zope-2.4.0-linux2-x86/lib/python/ZPublisher/Publish.py, line
112, in call_object
    (Object: pyScriptAdd)
  File /opt/Zope-2.4.0-linux2-x86/lib/python/Shared/DC/Scripts/Bindings.py,
line 324, in __call__
    (Object: pyScriptAdd)
  File /opt/Zope-2.4.0-linux2-x86/lib/python/Shared/DC/Scripts/Bindings.py,
line 354, in _bindAndExec
    (Object: pyScriptAdd)
  File /opt/Zope-2.4.0-linux2-x86/lib/python/App/special_dtml.py, line 241,
in _exec
    (Object: pyScriptAdd)
AttributeError: (see above)