Probably I'm overlooking something very obvious, but I can't find out what. I fail to add a zclass instance through dtml. I can add it in any folder I want using the management interface though, but the dtml fragment below raises an AttributeError with error value 'OLEenheid', which is the metatype of my zclass. Traceback see below. Can anybody put me back on track? <dtml-call "REQUEST.set('id', 'ovo002')"> <dtml-with "manage_addProduct['OLEenheid']"> <dtml-call "OLE_add(_.None, _, NoRedir=1)"> </dtml-with> Traceback (innermost last): File E:\zope\243\lib\python\ZPublisher\Publish.py, line 223, in publish_module File E:\zope\243\lib\python\ZPublisher\Publish.py, line 187, in publish File E:\zope\243\lib\python\Zope\__init__.py, line 226, in zpublisher_exception_hook (Object: broddel) File E:\zope\243\lib\python\ZPublisher\Publish.py, line 171, in publish File E:\zope\243\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: Eenheid) File E:\zope\243\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: Eenheid) File E:\zope\243\lib\python\OFS\DTMLMethod.py, line 199, in __call__ (Object: Eenheid) File E:\zope\243\lib\python\DocumentTemplate\DT_String.py, line 546, in __call__ (Object: Eenheid) File E:\zope\243\lib\python\DocumentTemplate\DT_With.py, line 133, in render (Object: manage_addProduct['OLEenheid']) File E:\zope\243\lib\python\DocumentTemplate\DT_Util.py, line 231, in eval (Object: manage_addProduct['OLEenheid']) (Info: manage_addProduct) File <string>, line 2, in f (Object: guarded_getitem) File E:\zope\243\lib\python\AccessControl\DTML.py, line 104, in guarded_getitem (Object: Eenheid) File E:\zope\243\lib\python\AccessControl\ZopeGuards.py, line 151, in guarded_getitem File E:\zope\243\lib\python\App\FactoryDispatcher.py, line 99, in __getitem__ File E:\zope\243\lib\python\App\FactoryDispatcher.py, line 102, in __bobo_traverse__ File E:\zope\243\lib\python\App\Product.py, line 137, in _product (Object: Products) AttributeError: (see above) Cornelis J. de Brabander ========================================== Department of Education, Leiden University P.O.Box 9555, NL-2300 RB Leiden +31 71 527 3422/3401 brabander@fsw.leidenuniv.nl ==========================================