[Zope] hmmm

[Sam Gendler]

This is the body of a dtml method

<dtml-if language_id>
  <dtml-if "language_id=='2'">
    <dtml-var ngo_contact_info_fr>
  <dtml-elif "language_id=='3'">
    <dtml-var ngo_contact_info_es>
  <dtml-else>
    <dtml-var ngo_contact_info>
  </dtml-if>
<dtml-else>
  <dtml-var ngo_contact_info>
</dtml-if>

The ngo_contact_info object is a dtml document that displays just fine
when viewed on its own or called from a form

If I call this method with language_id set to any value, I get the
following error, every time:

Error Type: ValueError
                   Error Value: Invalid Header (0):

Traceback (innermost last):
  File /home/sgendler/Zope-2.0.1-src/lib/python/ZPublisher/Publish.py,
line 214, in publish_module
  File /home/sgendler/Zope-2.0.1-src/lib/python/ZPublisher/Publish.py,
line 179, in publish
  File /home/sgendler/Zope-2.0.1-src/lib/python/Zope/__init__.py, line
201, in zpublisher_exception_hook
    (Object: ElementWithAttributes)
  File /home/sgendler/Zope-2.0.1-src/lib/python/ZPublisher/Publish.py,
line 165, in publish
  File /home/sgendler/Zope-2.0.1-src/lib/python/ZPublisher/mapply.py,
line 160, in mapply
    (Object: ContactInfo)
  File /home/sgendler/Zope-2.0.1-src/lib/python/ZPublisher/Publish.py,
line 102, in call_object
    (Object: ContactInfo)
  File /home/sgendler/Zope-2.0.1-src/lib/python/OFS/DTMLMethod.py, line
156, in __call__
    (Object: ContactInfo)
  File /home/sgendler/Zope-2.0.1-src/lib/python/OFS/DTMLMethod.py, line
370, in decapitate
ValueError: (see above)