[Zope] A cute traceback

Here's a strange one. <!-- Traceback (innermost last): File /home/morphex/Zope/lib/python/ZPublisher/Publish.py, line 878, in publish_module File /home/morphex/Zope/lib/python/ZPublisher/Publish.py, line 590, in publish (Info: /Linoo/system/interviews/interview_edit) File /home/morphex/Zope/lib/python/OFS/DTMLDocument.py, line 215, in __call__ (Object: interview_edit) File /home/morphex/Zope/lib/python/OFS/DTMLMethod.py, line 340, in decapitate ValueError: Invalid Header (0): --> I keep getting this at what seems to be random intervals; I've reinstalled Zope once to get rid of this message, but, it seems to be something wrong with what I've created. Any ideas?