[Zope] tracebacks

[Tom Deprez]

Hi,

Can somebody explain me how you can use the given tracebacks to find the
possible error? For example, I get the following error and I know what
causes it, but I don't know where I must go to find the code-line where the
error starts:

I get the following error when I use a table in which a field is defined
with a default string value. 

eg :

MY_NAME CHAR(20) DEFAULT 'tom'
MY_DATE TIMESTAMP DEFAULT '6/07/2000'
MY_DATE TIMESTAMP DEFAULT 'NOW'

---
Zope Error
Zope has encountered an error while publishing this resource. 

Error Type: cPickle.PicklingError
Error Value: Cannot pickle objects.
---

<!--
Traceback (innermost last):
  File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 222, in
publish_module
  File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 187, in publish
  File /usr/local/zope/lib/python/Zope/__init__.py, line 221, in
zpublisher_exception_hook
  File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 175, in publish
  File /usr/local/zope/lib/python/Zope/__init__.py, line 235, in commit
  File /usr/local/zope/lib/python/ZODB/Transaction.py, line 251, in commit
  File /usr/local/zope/lib/python/ZODB/Connection.py, line 348, in commit
    (Info: (('Products.ZnolkSQLWizard.Wizard', 'ZnolkSQLWizard'),
'\000\000\000\000\000\000\015\025', ''))
cPickle.PicklingError: (see above)

-->


Thanks for any advice.

Tom