inside my product i have a method like def manage_draw_PI(self, REQUEST=None): """draw: get the x- and y-coords from database """ self.sql_method = \ sql_method = self.aq_parent['sql_query'] # aquired from container self.sql_result = sql_method.__call__(query=self.sql_query) # query = 'select * from PI' self._p_changed = 1 if REQUEST is not None: management_view='Edit' # tell zope to hilight mgnt tab return self.manage_edit_PraxisIndex_Form(self) else: return sql_query is a sql_method for some GadFly.DA if the line w __call__ is commented out, it works (without function). if not, i get Zope Error Zope has encountered an error while publishing this resource. Error Type: cPickle.PicklingError Error Value: Cannot pickle objects. (a look at source shows: <extension class Acquisition.ImplicitAcquirerWrapper at 00EC5110>) Traceback (innermost last): File C:\PROGRA~1\Zope232\lib\python\ZPublisher\Publish.py, line 223, in publish_module File C:\PROGRA~1\Zope232\lib\python\ZPublisher\Publish.py, line 187, in publish File C:\PROGRA~1\Zope232\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook (Object: rki) File C:\PROGRA~1\Zope232\lib\python\ZPublisher\Publish.py, line 175, in publish File C:\PROGRA~1\Zope232\lib\python\Zope\__init__.py, line 235, in commit File C:\PROGRA~1\Zope232\lib\python\ZODB\Transaction.py, line 300, in commit File C:\PROGRA~1\Zope232\lib\python\ZODB\Connection.py, line 375, in commit (Info: (('Products.PraxIndex.RKI', 'PraxisIndex'), '\000\000\000\000\000\000\027N', '')) cPickle.PicklingError: (see above) carefully reading Shared/DC/ZRDB revealed nothing (hey, what is a zbrain and what is it good for?) ------------------------------------------------------------- Who's got only a hammer sees the world as a nail hans augustin (software developer) hans@beehive.de beehive elektronische medien GmbH http://www.beehive.de phone: +49 30 847-82 0 fax: +49 30 847-82 299