Re: PicklingError: Can't pickle <type 'ImplicitAcquirerWrapper'>

Wrap the code in ZODB.serialize where the error occurs
into a try..except and call pdb.set_trace() inside
the except clause. Looking at the data to be pickled
should give you a clue about the content object causing
the trouble.

-aj

Umberto Calligaro wrote:
> Hi,
> 
> we have a strange problem and we cannot find a solution.
> 
> In our /portal_catalog/ there are two ghost brains. We select their
> checkboxes and then press Remove*.* Then we get the message *Object
> Uncataloged*, but searching for the two brains, they still remain in the
> catalog.
> 
> Trying to /Update/ the catalog or /Clear and rebuild/, we get this error: 
> 
>     2014-11-27T17:54:18 ERROR Zope.SiteErrorLog
>     http://localhost:10181/mysite/portal_catalog/manage_catalogClear
>     Traceback (innermost last):
>       Module ZPublisher.Publish, line 63, in publish
>       Module Zope2.App.startup, line 238, in commit
>       Module transaction._manager, line 93, in commit
>       Module transaction._transaction, line 325, in commit
>       Module transaction._transaction, line 424, in _commitResources
>       Module ZODB.Connection, line 541, in commit
>       Module ZODB.Connection, line 586, in _commit
>       Module ZODB.Connection, line 620, in _store_objects
>       Module ZODB.serialize, line 407, in serialize
>       Module ZODB.serialize, line 416, in _dump
>     PicklingError: Can't pickle <type 'ImplicitAcquirerWrapper'>:
>     attribute lookup __builtin__.ImplicitAcquirerWrapper failed
> 
> 
> We get the same error when we try to add new Plone Site.
> 
> Can anyone help us?
> 
> Thank you
> 
> Umberto Calligaro 
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