[Erp5-dev] site upgrade difficulties - Zope 2.7 -> Zope 2.8

[Mikolaj Antoszkiewicz]

Hello,

I've upgraded my Mandriva to 2008 and along that installed a brand new, 
cutting edge ERP5 with Zope 2.8.9.1-final and Python 2.4.4

It works real well except with old sites.
Any site that previously worked with Zope 2.7.8-final and Python 2.4.3 
now give such an error (when trying to run zopectl):

...
   File "/usr/lib/erp5/lib/python/DocumentTemplate/__init__.py", line 
21, in <module>
     from DocumentTemplate import String, File, HTML, HTMLDefault, HTMLFile
   File "/usr/lib/erp5/lib/python/DocumentTemplate/DocumentTemplate.py", 
line 112, in <module>
     from DT_String import String, File
   File "/usr/lib/erp5/lib/python/DocumentTemplate/DT_String.py", line 
19, in <module>
     from DT_Util import ParseError, InstanceDict, TemplateDict, 
render_blocks, str
   File "/usr/lib/erp5/lib/python/DocumentTemplate/DT_Util.py", line 19, 
in <module>
     from html_quote import html_quote, ustr # for import by other 
modules, dont remove!
   File "/usr/lib/erp5/lib/python/DocumentTemplate/html_quote.py", line 
4, in <module>
     from ustr import ustr
   File "/usr/lib/erp5/lib/python/DocumentTemplate/ustr.py", line 18, in 
<module>
     nasty_exception_str = Exception.__str__.im_func
AttributeError: 'wrapper_descriptor' object has no attribute 'im_func'

Of course the Traceback is much longer, but the final part is as above.

Did anyone come across such a problem, or maybe not but it's a known 
upgrade issue.
I would really appreciate any help/hint/advice.

Mikolaj