[ZPT] manage_page_header not found

[Brent Hendricks]

Sometimes I get the following error

"manage_page_header" not found in "here/manage_page_header

when I trying to open a ZPT through the ZMI.  The odd thing is that
it's inconsistent.  I can't get it to happen everytime, but once it
starts, it persists on every page template I try to open.

Here's the traceback:

<!--
Traceback (innermost last):
  File /usr/local/src/Zope-2.4.1-src/lib/python/ZPublisher/Publish.py, line 223, in publish_module
  File /usr/local/src/Zope-2.4.1-src/lib/python/ZPublisher/Publish.py, line 187, in publish
  File /usr/local/src/Zope-2.4.1-src/lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook
    (Object: editMetadata.html)
  File /usr/local/src/Zope-2.4.1-src/lib/python/ZPublisher/Publish.py, line 171, in publish
  File /usr/local/src/Zope-2.4.1-src/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: ptEdit)
  File /usr/local/src/Zope-2.4.1-src/lib/python/ZPublisher/Publish.py, line 112, in call_object
    (Object: ptEdit)
  File /usr/local/src/Zope-2.4.1-src/lib/python/Shared/DC/Scripts/Bindings.py, line 324, in __call__
    (Object: ptEdit)
  File /usr/local/src/Zope-2.4.1-src/lib/python/Shared/DC/Scripts/Bindings.py, line 354, in _bindAndExec
    (Object: ptEdit)
  File /usr/local/var/zope/Products/PageTemplates/PageTemplateFile.py, line 163, in _exec
    (Object: ptEdit)
  File /usr/local/var/zope/Products/PageTemplates/PageTemplate.py, line 156, in pt_render
    (Object: ptEdit)
  File /usr/local/lib/python2.1/site-packages/TAL/TALInterpreter.py, line 229, in __call__
  File /usr/local/lib/python2.1/site-packages/TAL/TALInterpreter.py, line 262, in interpret
  File /usr/local/lib/python2.1/site-packages/TAL/TALInterpreter.py, line 503, in do_insertStructure_tal
  File /usr/local/var/zope/Products/PageTemplates/Expressions.py, line 198, in _eval
    (Info: here)
  File /usr/local/var/zope/Products/PageTemplates/Expressions.py, line 327, in restrictedTraverse
    (Object: editMetadata.html)
    (Info: (['manage_page_header'], 0))
  File /usr/local/var/zope/Products/PageTemplates/Expressions.py, line 346, in validate2
    (Object: editMetadata.html)
Undefined: (see above)

I'm using Zope-2.4.2 and ZPT-1.4.1.  Any ideas?

--Brent


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 thought-stuff.  He builds his castles in the air, from air, creating
 by exertion of the imagination.  Few media of creation are so
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                        -- Frederick Brooks, Jr., The Mythical Man Month